Visual Grammar and the View from Above 4. Where Stratification Quietly Breaks

If the distinction between system and catalogue concerns the organisation of explanation, the question of stratification concerns something more architectural: how different levels of semiosis are related in the first place.

Within Hallidayan theory, stratification is not optional ornamentation. It is a defining property of language as a semiotic system. Content is organised through semantics, which is realised through lexicogrammar, which is in turn realised through expression. The strata are distinct but related through realisation.

In much work on visual analysis, however, stratification is either assumed implicitly, adapted loosely, or gradually weakened in practice. This weakening is rarely explicit. It tends to occur through small shifts in descriptive language that accumulate into structural consequences.

It is here that stratification quietly breaks.

The most common site of this breakdown is the relation between what is called “visual meaning” and what is called “visual form”. At first glance, this appears to reproduce a familiar distinction between content and expression. However, in practice, the boundary between the two is often unstable.

Colour, for example, is frequently treated as both expressive resource and bearer of meaning. Spatial arrangement is described both as formal composition and as semantic organisation. Framing is treated as a physical property of the image and simultaneously as a mechanism of interpersonal positioning. In each case, expressive features are interpreted directly as semantic content.

What begins as a distinction between strata gradually collapses into a single undifferentiated field of “visual meaning”.

This collapse is not usually argued for. It is enacted through analysis.

Once expressive resources are treated as already semantic, the need for a mediating stratum disappears. Expression becomes immediately meaningful rather than functioning as the realisation of meaning. The architecture of stratification is replaced by a direct mapping between observable features and interpreted effects.

This is a crucial methodological shift, because it changes the status of explanation itself.

In a stratified model, explanation proceeds through relations of realisation. One asks how a lower stratum realises a higher one. Expression is not meaning; it is the means by which meaning is made manifest. The analytic task is therefore to account for the organisation of meaning across distinct levels.

In a non-stratified or weakened-stratification model, explanation tends to proceed by attribution. Meaning is read off from form. Expressive features are treated as already carrying semantic value. The analyst interprets visible properties as directly meaningful without an intervening level of realisation.

The result is a subtle but important inversion. Instead of:

content → realised through → expression

we often find:

expression → directly interpreted as → content

This inversion has significant consequences for the notion of system. If expressive features are already meaningful in themselves, then the system of meaning is no longer clearly distinguishable from the inventory of observable resources. The stratified architecture that would otherwise organise explanation begins to flatten.

At this point, the term “visual grammar” becomes especially unstable.

If grammar is taken in the systemic-functional sense, it belongs to a specific stratum within a stratified system. But if stratification is not consistently maintained, “grammar” can no longer function as a precise architectural term. It becomes a general label for patterned meaning in visual form.

What is lost in this shift is not descriptive richness but explanatory depth. Without stratification, it becomes difficult to distinguish between:

• the organisation of meaning, and
• the interpretation of form

They collapse into a single analytical gesture.

From a view-from-above perspective, this is a critical loss. Stratification is precisely what allows explanation to proceed from higher-order meaning potential toward lower-order realisation without conflating the two. It preserves the possibility that what appears as form is not itself meaning, but a realisation of meaning.

When stratification is weakened, explanation is forced to operate at the level of observable configuration. Meaning is reconstructed rather than explained. Interpretation replaces realisation.

This is why the breakdown is described as “quiet”. It does not appear as an explicit theoretical claim. It appears as a gradual erosion of distinctions that are foundational to the architecture being invoked.

The question, then, is not whether visual analysis should interpret images. It inevitably will. The question is whether interpretation is grounded in a stratified model of semiosis, or whether stratification has been silently replaced by a direct correspondence between visual features and semantic claims.

Once this question is raised, the stakes of “visual grammar” become clearer still. For what is at issue is not only how images are described, but whether the architecture of explanation being assumed is recognisably systemic-functional at all.

This leads directly to the next question: what is missing when this architecture is present in name but absent in orientation?

Visual Grammar and the View from Above 3. System or Catalogue?

Once explanation is oriented from below, a further consequence tends to follow almost automatically: the proliferation of categories.

As visual analysis proceeds from observed features—colour contrasts, compositional balance, salience, framing, gaze, spatial arrangement—it becomes necessary to organise these observations into describable groupings. Over time, these groupings are refined, subdivided, and extended. What begins as a small set of analytic distinctions gradually expands into a more elaborate taxonomy of visual resources.

At a certain point, however, a question becomes unavoidable: is this a system, or a catalogue?

This question is not about empirical adequacy. It is about theoretical architecture.

In a systemic-functional framework, a system is not simply a collection of terms for describing phenomena. A system is a network of meaningful contrasts: a structured set of mutually defining options in which each choice gains value through its relation to other possible choices.

A catalogue, by contrast, is an inventory. It lists features, types, or recurrent patterns without necessarily specifying the structured relations of opposition that would make those features part of a system.

The distinction is subtle but decisive.

A system explains structure. A catalogue describes structure.

A system is paradigmatic in orientation: it is organised by difference. A catalogue is classificatory: it is organised by resemblance.

This is where much work on “visual grammar” becomes methodologically revealing.

When one examines the analytic vocabulary of visual grammar traditions, one often finds a rich set of descriptive distinctions:

• vectors and narrative processes
• information value zones (left/right, top/bottom, centre/margin)
• salience hierarchies
• framing and separation devices
• gaze and interactional orientation
• modality markers (colour saturation, brightness, detail)

Taken individually, these distinctions can be extremely insightful. Collectively, they can produce a highly sensitive descriptive apparatus for analysing images.

The question, however, is whether they constitute a system in the systemic-functional sense.

Do these categories form a tightly organised network of oppositions in which each term is defined through its relation to the others?

Or do they function more as a flexible inventory of analytical lenses that can be applied as needed to particular images?

This is the point at which the difference between system and catalogue becomes critical.

A systemic-functional system is not defined by the number of categories it contains, but by the internal necessity of their relations. In a system, categories are not simply co-present; they are mutually constraining. The value of one term depends on the structured set of alternatives from which it is selected.

Without this relational architecture, what remains is classification rather than system.

And classification, however detailed, does not yet provide explanation in the systemic-functional sense.

It describes what is there, but not what makes what is there necessary within a network of meaning potential.

This is why the question of direction of explanation matters.

When analysis proceeds from below, categories tend to accumulate in response to observed variation. The more images are examined, the more distinctions are introduced to account for differences. Over time, the analytical framework expands horizontally: more types, more labels, more descriptive precision.

What is often missing is vertical integration: the explanation of why these categories exist as a system of differences rather than as a list of observations.

From a view-from-above perspective, the direction is reversed. One begins with a hypothesis about the organisation of visual meaning potential and asks how particular structures realise positions within that system. Categories are not derived from accumulation; they are specified by constraint.

This shift has a significant consequence for the status of “visual grammar”.

If visual grammar is understood as a system in the Hallidayan sense, then its categories must be internally motivated by structured oppositions. If, however, it functions primarily as a catalogue of useful distinctions, then it remains descriptively valuable but theoretically underdetermined.

Neither outcome invalidates the work. But they are not equivalent.

The former claims explanatory power. The latter offers descriptive coverage.

The issue, therefore, is not whether visual analysis should classify phenomena. It inevitably must. The issue is whether classification is mistaken for system.

Once this distinction is made explicit, a further question emerges: what would it mean to reconstruct visual analysis so that its categories are not simply accumulated, but derived from a principled organisation of visual meaning potential?

That question marks the transition to the next stage of the series.

Visual Grammar and the View from Above 2. The Hidden Default — Explanation from Below

One of the most characteristic features of work described as “visual grammar” is not always visible at the level of terminology. It is visible instead in the direction of explanation.

Despite its systemic-functional inspiration, much of this work proceeds in a consistent way: it begins with the observable image and works upward toward meaning.

This orientation is so familiar that it can appear methodologically neutral. An image is presented. Its compositional features are identified. Colour contrasts, salience patterns, spatial arrangements, framing devices, and vectors of attention are described. From this descriptive base, interpretive claims are then constructed: this element signifies stability, that element conveys dynamism, this arrangement produces authority or intimacy.

The movement is from structure to meaning.

This is what we can call explanation from below.

It is important to be precise here. There is nothing inherently illegitimate about attending to structure. The issue is not descriptive detail. The issue is explanatory direction.

In an explanation-from-below model, structure is treated as primary. Meaning is treated as derivative. The analyst begins with the visual artefact as a self-contained object and asks what it might signify. Meaning is inferred from configuration.

Even when systemic-functional terminology is used, this orientation often remains intact. Terms such as “realisation”, “resource”, “choice”, or even “metafunction” may be deployed, but the analytical movement still proceeds from observed form toward hypothesised meaning.

In this respect, the methodological logic differs subtly but decisively from Halliday’s principle of the view from above.

From a systemic-functional perspective, explanation does not begin with structure. It begins with system.

Structures are not starting points. They are outcomes.

They are not interpreted first and then assigned meaning. They are explained as the realisation of meaning potential.

This inversion is not a stylistic preference. It is a theoretical commitment.

To see the difference clearly, consider what each orientation takes as primary:

• Explanation from below:
  Visible form → inferred meaning → tentative systematisation
• Explanation from above:
  Systemic potential → functional organisation → structural realisation

The two are not different emphases on the same process. They are different models of what explanation is doing.

In the first, the analyst reconstructs meaning from observable features. In the second, the analyst explains observable features through meaning.

This distinction is crucial because it determines what counts as explanation.

In the lower-up model, explanation is successful when it produces a plausible interpretation of what is seen. In the upper-down model, explanation is successful when it shows how what is seen is a realisation of a system of meaning.

The difference is subtle but consequential.

In practice, explanation-from-below tends to encourage a particular kind of analytical proliferation. Once meaning is inferred from structure, the system must be rebuilt inductively from repeated observations. Categories accumulate: types of salience, types of framing, types of gaze, types of composition. The result is often a rich descriptive inventory, but one whose systemic status remains uncertain.

This is precisely where the term “grammar” becomes methodologically significant. If “grammar” is understood as a system of meaning potential, then it must precede and explain such inventories. If it is understood as a label for recurring patterns, then it emerges only after those patterns have been observed.

The ambiguity of “visual grammar” therefore reflects a deeper ambiguity in explanatory direction.

Systemic Functional Linguistics, in its Hallidayan formulation, resolves this ambiguity through its methodological commitment to the view from above. Systems are not abstractions from structures. They are explanatory conditions for structures. Meaning is not inferred from form. Form is interpreted as the realisation of meaning.

Once this orientation is adopted consistently, explanation-from-below appears not as a competing theory but as a reversal of explanatory priority.

This is the first point at which the stakes of “visual grammar” become visible.

The question is not whether visual analysis should attend to structure. It must. The question is whether structure is taken as the starting point of explanation, or as something to be explained.

The remainder of this series will explore what changes when that distinction is taken seriously.

Visual Grammar and the View from Above 1. Why “Visual Grammar” Is Not a Neutral Term

The phrase “visual grammar” has become one of the central organising terms in multimodal research. It appears to offer a natural extension of linguistic description into the visual domain: if language has a grammar, then images must have one too. The term seems, at first glance, methodologically innocent—simply a convenient way of describing structured regularities in visual meaning.

But terms are never neutral when they import theoretical architecture.

“Grammar” is not a general synonym for structure. In Systemic Functional Linguistics, grammar refers to a specific stratum within a stratified semiotic system: lexicogrammar is the interface where semantic options are realised in syntagmatic form. It is not merely “patterning”; it is a theoretically defined level in a carefully differentiated architecture.

Once this is recognised, the phrase “visual grammar” becomes ambiguous in a very precise sense. It may mean one of two things:

1. A claim that images possess a stratified content plane analogous to language, including a grammatical stratum; or
2. A metaphorical extension in which “grammar” simply means structured organisation of visual resources.

These are not minor variations in terminology. They are fundamentally different theoretical commitments.

The first position imports the full burden of Halliday’s stratification model into visual semiosis. It implies content organised through an intermediate stratum of realisation, and thus a relation between system and structure analogous to that found in language.

The second position does something quite different. It abandons stratification while retaining the vocabulary of grammar. “Grammar” becomes shorthand for regularities in composition, salience, framing, colour distribution, or spatial arrangement. In this usage, the term no longer names a stratum. It names a descriptive convenience.

The problem is that both uses frequently operate simultaneously, often without explicit acknowledgement of the shift. As a result, “visual grammar” appears to carry theoretical weight derived from Systemic Functional Linguistics while functioning descriptively in a much weaker sense.

This ambiguity matters because it masks the explanatory direction of the analysis.

If “grammar” is taken in its systemic-functional sense, then analysis must proceed from above: from systems of visual meaning potential towards their structural realisations. If, however, “grammar” is used as a label for observable patterns, then analysis proceeds from below: from structures upwards to inferred meanings.

The same term thus encodes two incompatible methodological orientations.

This is why “visual grammar” is not a neutral term. It is a point at which two different theories of explanation silently diverge while appearing to coincide.

The issue is not whether images are structured. They clearly are. The issue is how that structure is to be explained, and in which direction explanation is allowed to move.

A systemic-functional approach begins from a simple methodological commitment: explanation proceeds from the view from above. Systems are not derived from structures; structures are explained through systems. Function is not inferred from form; form is explained through function. Meaning is not reconstructed from observable features; observable features are interpreted as realisations of meaning.

Once this orientation is adopted, the ambiguity in “visual grammar” becomes visible as a theoretical fault line rather than a terminological preference.

The task of the following discussion is therefore not to reject the term outright, but to ask what kind of explanation is being performed when it is used—and whether that explanation is genuinely systemic-functional, or only borrowing its vocabulary.

Towards a Systemic-Functional Theory of Images: The View from Above and the Study of Visual Semiosis

Systemic Functional Linguistics is often characterised through its analytical concepts: system, metafunction, register, stratification, grammar, semantics, and many others. Yet Halliday repeatedly characterised the theory in a different way. He described it as giving priority to the view from above.

This principle is so familiar within Systemic Functional Linguistics that its significance is often overlooked. Yet it may be the defining methodological commitment of the systemic-functional enterprise.

The present article does not propose a new interpretation of Halliday's work. On the contrary, it returns to a principle that Halliday himself repeatedly foregrounded and explores its implications for the study of visual semiosis.

The argument is straightforward. A theory is systemic-functional to the extent that it gives explanatory priority to the view from above. This orientation is not confined to any one part of the theory. It recurs throughout Halliday's architecture. When applied to visual semiosis, it suggests a distinctive approach to images—one that begins not with visible forms but with the systems of meaning those forms realise.

The View from Above

Halliday's notion of the view from above is methodological rather than merely descriptive. It concerns the direction in which explanation proceeds.

In traditional approaches to grammar, explanation often begins with structures. The analyst identifies formal configurations and then attempts to determine their significance. Halliday reversed this orientation. Grammar was approached as a network of meaningful choices. Structures were explained through the systems they realised.

This commitment extends far beyond grammar.

Across the architecture of Systemic Functional Linguistics, explanation repeatedly proceeds from the more abstract pole of a relation towards the more concrete.

Structures are explained through systems.

Forms are explained through functions.

Language is explained through context.

Instances are explained through potential.

The precise nature of these relations differs across dimensions of the theory. The relation between system and structure is not identical to that between context and text, nor is either identical to the relation between potential and instance. Yet the explanatory orientation remains remarkably consistent. Semiotic phenomena are explained by relating them to the broader potentials, functions, contexts, and systems in which they participate.

This is the significance of the view from above.

It does not deny the importance of structures, forms, texts, or instances. It simply refuses to treat them as self-explanatory.

Beyond Language

The importance of this methodological principle becomes particularly apparent when Systemic Functional Linguistics is extended beyond language.

Discussions of visual semiosis often begin with visible forms. Analysts examine colours, shapes, spatial arrangements, framing relations, and other observable features. The central question becomes: what do these forms mean?

From a systemic-functional perspective, however, this is not the natural starting point.

The question is not what a visible form means. The question is what system of meaning the form realises.

The distinction is fundamental.

The first approach begins from the observable artefact and works towards explanation.

The second begins from meaning potential and seeks to explain the artefact.

The difference is methodological rather than terminological.

Indeed, an analysis may employ systemic-functional vocabulary while proceeding from below, just as an analysis may remain deeply Hallidayan while using very little specialised terminology. What matters is not the presence of particular labels but the direction of explanation.

The view from above therefore provides a criterion for evaluating what it means for an analysis to be genuinely systemic-functional.

Images and the Architecture of Semiosis

Once the view from above is adopted, a number of questions concerning visual semiosis appear in a different light.

The first concerns the status of images themselves.

Images are semiotic. They possess content and expression. They participate in contextual meanings. They may exhibit metafunctional organisation. They may vary according to register. None of this is controversial.

What remains less clear is whether visual semiosis possesses the same internal architecture as language.

Language is distinctive in that its content plane is stratified. Semantics is realised by lexicogrammar, which is in turn realised by expression. This architecture has often encouraged the assumption that grammar is a necessary component of semiosis.

Yet no such conclusion follows.

A semiotic system may possess content and expression without possessing a lexicogrammatical stratum. Indeed, Halliday's account of semiosis strongly suggests that language is exceptional rather than typical in this respect.

The implication is significant.

Images need not be treated as languages in order to be treated as semiotic.

Nor does the absence of grammar imply the absence of semiotic organisation.

The task is therefore not to identify visual equivalents of clauses, phrases, or grammatical structures. The task is to investigate the systems of meaning that organise visual semiosis on its own terms.

Content and Expression

The importance of the view from above becomes particularly clear when content and expression are distinguished.

Visual analysis frequently moves directly from visible features to meanings. Colour provides a familiar example. Blue may be associated with tranquillity, red with danger, green with nature, and so on.

Such observations may be insightful, but they often blur the distinction between content and expression.

Colour belongs to expression.

Meaning belongs to content.

The significance of colour lies not in the fact that colour is meaning, but in the fact that colour may participate in the realisation of meaning.

The distinction is crucial because it preserves the architecture of semiosis. Content and expression are related through realisation; they are not identical.

A systemic-functional theory of images must therefore resist the temptation to collapse visible forms into meanings. The task is not to assign meanings to colours, shapes, or spatial arrangements. It is to understand how such expressive resources participate in systems of visual meaning.

Reclaiming the View from Above

At this point it becomes possible to state the central claim of this essay.

The challenge facing the study of visual semiosis is not whether linguistic categories should be extended into visual domains. Nor is it whether images possess a grammar analogous to that of language.

The more fundamental question is methodological.

What would it mean to approach images from above?

Such an approach would begin not with visible forms but with visual meaning potential.

It would seek to identify systems of visual meaning before attempting to describe their structural or expressive realisations.

It would treat visual structures as requiring explanation rather than as providing explanation.

And it would investigate visual semiosis through the same methodological commitment that Halliday placed at the centre of systemic-functional theory.

In this sense, the goal is not to transform images into language.

It is to take semiosis seriously.

Towards a Research Agenda

A systemic-functional theory of images remains largely undeveloped.

The purpose of this essay has not been to provide such a theory but to clarify the methodological principle from which one might emerge.

Once the view from above is adopted, a range of questions come into focus.

What systems organise visual meaning?

How is visual content differentiated?

How are visual content and visual expression related?

How are visual registers organised?

How are ideational, interpersonal, and textual meanings actualised in visual semiosis?

These questions cannot be answered in advance. They require sustained theoretical and empirical investigation.

What can be said, however, is that the answers are unlikely to be found by beginning with visible forms alone.

Halliday's enduring contribution was not merely a collection of analytical categories. It was a distinctive mode of explanation. He insisted that semiotic phenomena are best understood from above rather than below, through the broader systems, functions, contexts, and potentials that make them possible.

If a systemic-functional theory of images is to emerge, it will emerge from that same commitment.

The view from above remains not only Halliday's methodological principle. It remains the indispensable starting point for any genuinely systemic-functional account of visual semiosis.

Towards a Systemic-Functional Theory of Images 11. Afterword

1. The Problem

Research into images has often proceeded by analogy with language. Images are treated as though they possess grammars, visual elements are assigned meanings, and analysis frequently begins with visible forms and asks what they signify.

From a Hallidayan perspective, this approach is theoretically problematic.

The issue is not whether images are meaningful. The issue is whether they should be understood through the same architecture that explains language.

This paper argues that they should—but not in the way usually assumed.

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2. The Hallidayan Starting Point

The defining characteristic of Systemic Functional Linguistics is not a set of analytical categories but a mode of explanation.

SFL gives priority to the view from above.

Explanation proceeds from value to token:

• system over structure,
• function over form.

Structures are explained through systems; forms are explained through functions.

This methodological commitment remains fundamental whether the object of study is language or any other semiotic system.

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3. Visual Semiosis in Halliday's Architecture

Halliday's architecture distinguishes among three global dimensions:

• stratification,
• instantiation,
• metafunction.

Visual semiosis may be investigated within the same dimensions.

Like language, visual semiosis possesses content and expression planes which together realise context.

Unlike language, however, visual semiosis does not appear to possess a lexicogrammatical stratum.

This distinction is crucial.

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4. Why Images Are Not Languages

Images are semiotic.

It does not follow that they are linguistic.

Language possesses a uniquely stratified content plane consisting of semantics and lexicogrammar.

Images do not.

Consequently, the search for visual clauses, visual syntax, or visual grammar mistakes a property of language for a property of semiosis in general.

Images are not languages.

They are visual semiosis.

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5. Content and Expression

The failure to distinguish content from expression has generated persistent confusion in visual analysis.

Colour provides a familiar example.

Blue is often said to mean tranquillity; red is said to mean danger.

Such formulations collapse content into expression.

Colour belongs to the expression plane.

Meaning belongs to the content plane.

The theoretical task is not to determine what colours mean but to investigate how colour participates in the realisation of meaning.

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6. Photography and the Transparency Illusion

Photography is often treated as though it bypasses semiosis and presents reality directly.

This transparency is illusory.

Photographs participate in semiosis no less than paintings, drawings, or diagrams.

Their apparent naturalness obscures rather than abolishes the semiotic relations through which they function.

The photograph is not explained by the world it depicts.

It is explained through its participation in meaning.

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7. A Research Agenda

A systemic-functional theory of images therefore begins from a different set of questions.

Not:

• What does this visual feature mean?
• What is the grammar of this image?

But:

• What systems organise visual content?
• What expressive resources realise those meanings?
• How are visual meanings distributed through register?
• How do visual meanings enact ideational, interpersonal, and textual functions?
• How are content and expression related in visual semiosis?

These questions remain largely open.

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8. Conclusion

The future of visual semiotics lies not in treating images as languages.

It lies in extending Halliday's theory of semiosis beyond language while preserving the distinctions that make the theory coherent.

The central methodological commitment remains unchanged:

explanation proceeds from above.

A systemic-functional theory of images therefore begins not with visible forms but with the semiotic architecture that makes those forms meaningful.

Towards a Systemic-Functional Theory of Images 10. Towards a Hallidayan Theory of Visual Semiosis: Reclaiming the View from Above

This series began with a simple observation.

Much work on visual semiosis proceeds differently from the way Systemic Functional Linguistics approaches language.

When analysing language, Halliday begins from systems rather than structures, from meaning rather than form, and from the view from above rather than the view from below.

When analysing images, however, researchers often begin with visible features and ask what they mean.

The image becomes a collection of observable forms awaiting interpretation.

Colour is assigned meanings.

Compositions are assigned meanings.

Framing relations are assigned meanings.

The distinction between content and expression frequently becomes blurred.

The result is not necessarily wrong.

But it is no longer recognisably Hallidayan.

This series has been an attempt to recover the theoretical resources needed for a genuinely Hallidayan approach to visual semiosis.

Returning to Halliday's Architecture

The central claim of the series has been deceptively simple.

Visual semiosis should be approached through the same global dimensions that organise language:

• stratification,

• instantiation,

• metafunction.

These dimensions are not peculiar to language.

They are dimensions of semiotic organisation.

What distinguishes language is not the existence of these dimensions but the particular way in which language instantiates them.

Most importantly, language possesses a stratified content plane consisting of semantics and lexicogrammar.

Visual semiosis does not appear to.

This difference has profound consequences.

It means that visual semiosis cannot simply be treated as a language without words.

Nor should it be analysed by searching for visual equivalents of clauses, phrases, or grammatical structures.

Images are not languages.

The task is therefore not to extend linguistic categories into visual space.

The task is to understand visual semiosis on its own terms.

Content and Expression

One of the most persistent themes of the series has been the distinction between content and expression.

All semiosis requires both.

Yet visual analysis often oscillates between them without clearly distinguishing the two.

The problem becomes especially visible in discussions of colour.

Colour belongs to expression.

Meaning belongs to content.

The significance of colour lies not in what colour means but in how colour participates in the realisation of meaning.

The same principle applies more broadly.

Visual expression is not meaning.

Nor is meaning reducible to expression.

The relation between them is one of realisation.

Maintaining this distinction is essential if visual semiosis is to be theorised systematically.

Beyond Visual Grammar

A second theme has concerned the widespread search for visual grammar.

The attraction of this project is understandable.

Grammar occupies a central place within the architecture of language.

If images are semiotic, it seems natural to ask whether they too possess a grammar.

Yet this question may be misleading.

The existence of semiosis does not entail the existence of lexicogrammar.

A semiotic system may possess content and expression without reproducing the particular architecture of language.

Visual semiosis therefore invites a different line of inquiry.

Instead of searching for visual clauses, we should investigate visual meaning.

Instead of searching for visual syntax, we should investigate visual systems.

The challenge is not to demonstrate that images are languages.

It is to understand how images function as semiosis.

Metafunction Beyond Language

The series has also argued that metafunction remains indispensable.

Visual semiosis, no less than language, participates simultaneously in:

• ideational meaning,

• interpersonal meaning,

• textual meaning.

These metafunctions do not belong to language alone.

They are principles of semiotic organisation.

Consequently, visual meaning can be investigated from the same metafunctional perspectives that have proved so productive in linguistic analysis.

The result is not a transfer of grammar into visual space.

It is a recognition that semiotic organisation extends beyond language.

Context and Register

A Hallidayan theory of visual semiosis must also take context seriously.

Meaning does not arise within isolated artefacts.

It emerges through participation in social situations.

Visual semiosis therefore stands in the same relation to context as language.

Images do not merely depict contexts.

They realise contextual values.

This observation has important implications for register.

Visual registers are not collections of recurring features.

They are regions of visual meaning potential associated with situation types.

The explanatory task is therefore not to catalogue visual forms but to understand how visual meanings are organised and distributed across contexts.

Photography and the View from Below

Photography provided a particularly revealing case.

The authority of photography rests largely upon the transparency illusion: the belief that photographs simply show reality.

Yet photographs do not escape semiosis.

Their apparent naturalness often conceals the semiotic work they perform.

The transparency illusion therefore mirrors a broader methodological tendency.

It encourages analysis to begin from the visible image itself.

A Hallidayan perspective insists on a different direction of explanation.

The photograph is not explained by what it depicts.

It is explained through its participation in semiosis.

Again, explanation proceeds from above.

What Remains to Be Done

This series has not attempted to provide a completed theory of visual semiosis.

Indeed, one of its conclusions is that such a theory remains largely undeveloped.

Many questions remain open.

What systems organise visual content?

How are visual meanings differentiated?

What expressive systems organise visual form?

How are content and expression related within visual semiosis?

What kinds of registers emerge across different visual domains?

These questions require extensive theoretical and empirical investigation.

The purpose of the present series has been more modest.

It has sought to establish a coherent architecture within which such investigations might proceed.

Reclaiming the Hallidayan Project

As announced at the outset, this series has been concerned with Reclaiming a Hallidayan Approach to Visual Semiosis.

The choice of the word reclaiming was deliberate.

Halliday provided a remarkably powerful account of semiosis.

Yet much of that power derives not from particular analytical techniques but from a distinctive theoretical orientation.

The priority of system over structure.

The priority of content over expression.

The priority of explanation over description.

The priority of the view from above.

These commitments transformed the study of language.

There is no reason they cannot also transform the study of visual semiosis.

What is required is not the extension of linguistic categories into visual domains.

What is required is the application of Halliday's theoretical principles to visual phenomena.

A Final Reflection

The question posed by visual semiosis is not whether images can be analysed like language.

The question is more interesting than that.

What happens when Halliday's theory of semiosis is taken seriously beyond language?

The answer remains unfinished.

But one conclusion already seems clear.

Images are not languages.

They are not failed languages.

They are not incomplete languages.

They are not languages at all.

They are visual semiosis.

And if visual semiosis is approached through the architecture Halliday developed for understanding semiosis itself, a genuinely systemic-functional theory of images may finally begin to emerge.

Towards a Systemic-Functional Theory of Images 9. Photography and the Transparency Illusion: The Most Persuasive Image

Among all forms of visual semiosis, photography occupies a distinctive position.

Paintings are generally recognised as constructions.

Drawings are generally recognised as representations.

Diagrams are generally recognised as abstractions.

Photographs, however, often appear to be something else entirely.

They appear to be reality itself.

This appearance has given photography a remarkable cultural authority.

Photographs are routinely treated as evidence.

They are taken to document events.

They are used to establish identities.

They are invoked as proof.

The underlying assumption is simple:

the camera merely records what is there.

From a Hallidayan perspective, however, this assumption deserves closer scrutiny.

The Transparency Illusion

The power of photography rests upon what might be called a transparency illusion.

A photograph appears transparent to the world it depicts.

The viewer's attention passes through the image towards the scene beyond it.

The photograph seems not to mediate reality but merely to reveal it.

Consequently, the photograph often disappears as a semiotic object.

The image becomes a window.

The act of representation becomes invisible.

The photograph appears not to mean but simply to show.

This is the transparency illusion.

Why the Illusion Is Persuasive

The illusion is not arbitrary.

Unlike many other visual artefacts, photographs are causally connected to the scenes they depict.

Light reflected from objects contributes directly to the formation of the image.

This relation encourages the belief that photographs somehow bypass semiosis.

If the image is caused by the scene, then perhaps the image simply presents the scene.

Yet this conclusion does not follow.

A causal relation is not the same thing as a semiotic relation.

The fact that a photograph originates in a physical process does not eliminate the semiotic processes through which it functions.

Indeed, the very intelligibility of a photograph depends upon semiosis.

Selection Before Interpretation

Even the simplest photograph presupposes selection.

Someone chooses:

• where to position the camera,

• what to include,

• what to exclude,

• when to capture the image,

• which lens to use,

• which perspective to adopt.

These decisions occur before any subsequent editing or manipulation.

They are not accidental.

They shape what becomes visible and what remains invisible.

The resulting image is therefore not reality as such.

It is a particular visual construction of reality.

The transparency illusion arises because these selections become difficult to see once the photograph has been produced.

The Myth of Neutral Observation

The authority of photography often rests upon a deeper assumption.

The assumption is that observation itself can be neutral.

If the camera merely records what is present, then the resulting image appears free from interpretation.

Yet this is precisely where the Hallidayan perspective becomes valuable.

Semiosis is not something added after observation.

The world does not first appear in a neutral form and then acquire meaning.

Rather, meaning is intrinsic to semiotic activity.

A photograph functions as a semiotic artefact from the moment it enters social life.

Its significance depends not merely upon what it depicts but upon how it participates in contextual meanings.

The image is never simply a record.

It is always a semiotic event.

Expression Without Transparency

The transparency illusion also obscures the role of expression.

Because photographs appear natural, expressive resources are often overlooked.

Yet photographs employ many of the same expressive resources found elsewhere in visual semiosis:

• colour,

• brightness,

• contrast,

• texture,

• focus,

• framing,

• spatial organisation.

These resources do not cease to function because they appear natural.

A shallow depth of field remains a semiotic resource.

A high-contrast image remains a semiotic resource.

A particular colour palette remains a semiotic resource.

The apparent naturalness of the image does not abolish expression.

It merely conceals it.

The View from Below

Photography encourages a strongly downward perspective on semiosis.

The viewer begins with the visible image and proceeds directly to the depicted scene.

The photograph therefore seems to support the view from below.

Meaning appears to arise from what is observed.

The image appears to derive its significance from reality itself.

A Hallidayan perspective reverses this movement.

The question is not simply what the photograph depicts.

The question is what meanings are being realised through the photograph.

The image is not explained by the scene.

The image is explained by its participation in semiosis.

Again, explanation proceeds from above.

Photography and Context

This becomes particularly obvious when identical photographs appear in different contexts.

The same image may function as:

• evidence,

• advertising,

• journalism,

• memorialisation,

• artistic expression,

• political persuasion.

What changes is not necessarily the image itself.

What changes is the contextual value within which the image participates.

The photograph remains physically identical.

Its semiotic significance changes.

This fact alone should make us cautious about locating meaning in the image itself.

The photograph functions within a larger semiotic architecture.

Beyond Representation

The transparency illusion ultimately rests upon a particular conception of images.

Images are treated as representations that stand between observers and reality.

The photograph appears to succeed precisely because it minimises this distance.

Yet from a systemic-functional perspective, semiosis is not fundamentally a matter of representation.

It is a matter of meaning.

The crucial question is therefore not how accurately a photograph reproduces reality.

The crucial question is how a photograph participates in the organisation of meaning.

Once this shift occurs, photography appears in a new light.

The photograph is no longer a transparent window.

It becomes a semiotic resource.

Towards a Hallidayan Theory of Visual Semiosis

Throughout this series, we have repeatedly encountered the same principle.

Visual semiosis becomes clearer when approached from above rather than below.

Content and expression must be distinguished.

System and structure must be distinguished.

Context and semiosis must be distinguished.

Photography has provided perhaps the most compelling test of these distinctions because it constantly invites us to collapse them.

The photograph appears to be reality.

The Hallidayan perspective reveals it to be semiosis.

The final post draws these threads together.

What would a genuinely Hallidayan theory of visual semiosis look like?

And what might such a theory contribute to the future development of systemic functional linguistics?

Towards a Systemic-Functional Theory of Images 8. Colour Revisited: Meaning, Expression, and a Persistent Confusion

Throughout this series, a recurring theme has emerged.

Visual semiosis has often been analysed from below rather than from above.

The analyst begins with what is visible and then attempts to determine what it means.

From a Hallidayan perspective, however, visible forms are not the starting point of explanation. They are what require explanation.

This principle becomes particularly important when we turn to one of the most discussed features of visual semiosis: colour.

Few topics have generated more interpretive commentary.

Blue is said to signify tranquillity.

Red is said to signify danger.

Green is said to signify nature.

Black is said to signify authority.

White is said to signify purity.

Such claims are familiar enough that they often pass without comment.

Yet from a systemic-functional perspective, they raise an important theoretical question.

What exactly is being described?

Where Is Colour?

Before asking what colour means, we need to ask a simpler question.

Where does colour belong within the architecture of semiosis?

The answer is straightforward.

Colour belongs to the expression plane.

It is a visual resource through which semiosis is realised.

Whatever meanings may be associated with colour, colour itself is not meaning.

It is expression.

This distinction may seem obvious.

Yet visual analysis frequently proceeds as though colour and meaning were interchangeable.

The result is a continual slippage between content and expression.

The Problem with Colour Meanings

Consider a familiar example.

An analyst observes the colour blue and proposes that it signifies tranquillity.

At first glance, the interpretation appears reasonable.

But what has actually been established?

Certainly a colour has been identified.

And certainly a meaning has been proposed.

What remains unclear is the relation between them.

If blue literally means tranquillity, then tranquillity should be inseparable from blueness.

Yet this is obviously not the case.

A sense of tranquillity may be realised through:

• muted colour palettes,

• reduced visual contrast,

• open spatial arrangements,

• balanced compositions,

• soft visual boundaries,

or many other expressive resources.

The meaning remains recognisable even when the colour changes.

This suggests that tranquillity cannot be identified with blue itself.

The colour belongs to expression.

The meaning belongs to content.

The Direction of Explanation

This distinction reveals a broader methodological issue.

Many analyses move from colour to meaning.

The reasoning proceeds roughly as follows:

Here is a colour.

Therefore, what does it mean?

A Hallidayan approach reverses the direction.

The question becomes:

Here is a meaning.

How is it realised?

Colour then becomes one possible expressive resource among many.

The explanatory priority shifts from expression to content.

Again, the view from above proves decisive.

The analyst is no longer asking what colours mean.

The analyst is asking how meanings may be realised chromatically.

Colour and Context

The difficulties become even clearer when context enters the picture.

The same colour may participate in very different meanings across different situations.

Red may be associated with warning in one context, celebration in another, political affiliation in a third, and aesthetic preference in a fourth.

Blue may evoke calmness in one setting and institutional authority in another.

These variations are often treated as exceptions.

From a systemic-functional perspective, they are exactly what we should expect.

Meaning does not reside in colour itself.

Colour participates in the realisation of meanings that are intelligible within particular contexts.

The contextual value remains primary.

The colour is one resource through which that value may be realised.

Colour and Choice

At this point an important objection may arise.

Surely colour choices matter.

A designer may deliberately choose blue rather than red.

A painter may deliberately construct a particular palette.

A photographer may deliberately seek particular chromatic effects.

Is this not evidence that colour itself carries meaning?

Not necessarily.

What it demonstrates is that colour functions as a semiotic resource.

A resource can be selected precisely because it is capable of realising particular meanings.

The existence of choice does not collapse the distinction between content and expression.

On the contrary, it presupposes it.

The expressive resource is selected because it is capable of realising a content value.

The Special Case of Photography

Colour becomes particularly interesting when we turn to photography.

A painter may choose to depict a blue sky.

A graphic designer may choose to create one.

A photographer, however, appears merely to record what is already present.

This appearance has encouraged the belief that photographic colour is somehow more natural and therefore less semiotic.

Yet the situation is more complicated.

Photographers choose:

• where to point the camera,

• when to take the photograph,

• what lighting conditions to exploit,

• how to expose the image,

• how to process the result,

and increasingly, how to manipulate colour after capture.

The apparent transparency of photography conceals a substantial semiotic process.

Indeed, the assumption that photographs simply show reality may be one of the most powerful illusions in visual culture.

Beyond Colour Symbolism

The goal of a Hallidayan approach is therefore not to compile dictionaries of colour meanings.

Such projects begin from expression and attempt to work upward.

Instead, the task is to understand how colour functions within a broader semiotic architecture.

Colour is neither meaning nor reality.

It is an expressive resource.

Its significance lies in the meanings it may realise and the contexts within which those meanings become intelligible.

Once this distinction is maintained, many familiar debates about colour begin to look rather different.

The question is no longer:

What does blue mean?

The question becomes:

What meanings are being realised through this chromatic organisation, and how does colour participate in that realisation?

Looking Ahead

Colour provides a useful reminder that visual semiosis cannot be understood simply by inspecting visible forms.

Expression is not self-explanatory.

It becomes intelligible through its relation to content and context.

Nowhere is this lesson more important than in photography.

Photography has often been treated as though it bypasses semiosis altogether—as though the camera simply delivers reality directly to perception.

A Hallidayan perspective suggests otherwise.

The next post examines what might be called the transparency illusion: the belief that photographs merely show the world rather than participating in the semiotic organisation of meaning.

Towards a Systemic-Functional Theory of Images 7. Visual Systems and Visual Structures: Axis Beyond Language

The previous post argued that visual semiosis participates in context through register.

Different social situations draw upon different regions of visual meaning potential, giving rise to distinctive patterns of visual semiosis.

This observation, however, leaves an important question unanswered.

How is visual semiosis organised internally?

To answer this question, we must turn to another of the fundamental dimensions of Systemic Functional Linguistics: axis.

The dimension of axis is often discussed through grammar. Yet it is not peculiar to grammar, nor even to language itself. It is a general semiotic principle.

If visual semiosis is a semiotic system, then it is reasonable to ask whether it too exhibits paradigmatic and syntagmatic organisation.

The Dimension of Axis

Halliday distinguishes between two complementary forms of organisation:

• paradigmatic order (system)

• syntagmatic order (structure)

A system is a set of related alternatives.

A structure is a configuration.

The relation between them is one of realisation.

Structure realises system.

Importantly, this distinction is not a distinction between meaning and form.

Nor is it a distinction between potential and instance.

It is a distinction between two modes of semiotic organisation.

The dimension of axis is therefore independent of both stratification and instantiation.

System and Structure Are Not Restricted to Meaning

One reason the distinction is often misunderstood is that discussions of system and structure frequently focus on grammar.

This can create the impression that systems belong to meaning while structures belong to form.

But Halliday's architecture is more general than this.

The distinction between paradigmatic and syntagmatic organisation applies wherever a semiotic system exhibits relations of choice and configuration.

Thus, in language, we find systems and structures not only in lexicogrammar but also in phonology.

The distinction therefore cannot be reduced to the content plane.

Axis cuts across the semiotic architecture.

It is a way of organising semiotic phenomena rather than a particular kind of semiotic phenomenon.

Why This Matters for Visual Semiosis

Once this point is recognised, a common assumption about images becomes less convincing.

Many approaches to visual analysis begin by describing structures.

An image is analysed in terms of:

• composition,

• framing,

• balance,

• symmetry,

• salience,

• contrast,

and other observable configurations.

Such descriptions are often valuable.

But they leave a theoretical question unanswered.

Are these structures related to systems?

Or are they merely collections of visible features?

A Hallidayan approach cannot be satisfied with structural description alone.

If visual semiosis exhibits axis, then structures should be intelligible as realisations of systems.

The challenge is therefore not simply to identify structures.

It is to understand the systems those structures realise.

The View from Above Revisited

This brings us back to the central methodological principle of the series.

The view from above gives explanatory priority to system rather than structure.

This does not mean structures are unimportant.

On the contrary, structures are indispensable.

Without structures, systems could never be realised.

The point is that structures do not explain themselves.

A configuration becomes intelligible through its relation to alternatives.

To explain a structure is therefore to show how it participates in a system.

The question is not merely:

How is this image organised?

but:

What alternatives make this organisation meaningful?

A Different Question from Visual Grammar

At this point it is important to avoid a familiar misunderstanding.

To ask whether visual semiosis exhibits systems and structures is not the same as asking whether it possesses a grammar.

These are different theoretical questions.

The existence of paradigmatic and syntagmatic organisation does not entail the existence of a lexicogrammatical stratum.

Language possesses both.

Visual semiosis may possess the former without possessing the latter.

Indeed, this possibility may be one of the most important implications of a Hallidayan approach.

Images need not be languages in order to exhibit systemic organisation.

What Might Visual Systems Be?

This question remains open.

The purpose of the present post is not to provide a completed inventory of visual systems.

Rather, it is to establish the theoretical space in which such an investigation becomes possible.

If visual semiosis exhibits axis, then we should expect to find:

• paradigmatic relations among visual alternatives,

• syntagmatic configurations realising those alternatives,

• and systematic relations between the two.

The task of analysis would then be to reconstruct those relations.

Not to catalogue structures in isolation, but to understand them as moments within a larger semiotic organisation.

Beyond Structural Description

This perspective suggests a shift in emphasis.

Instead of treating composition, framing, or salience as self-explanatory categories, we begin asking what systems they may realise.

Instead of accumulating inventories of visual features, we investigate networks of semiotic alternatives.

Instead of beginning from structure alone, we seek the paradigmatic relations that make structure meaningful.

The goal is not to abandon the study of visual structures.

The goal is to place them within a systemic account of visual semiosis.

Looking Ahead

If visual semiosis possesses both content and expression planes, and if both may potentially exhibit paradigmatic and syntagmatic organisation, then a further question immediately arises.

How are the resources of visual expression related to visual content?

This question becomes particularly pressing when we consider colour.

Colour has often been treated as though it possessed meanings in its own right.

Yet from a systemic-functional perspective, colour first appears as an expressive resource.

How, then, does colour participate in semiosis?

The next post revisits one of the most familiar topics in visual analysis and asks a deceptively simple question:

What exactly are we talking about when we talk about colour?

Towards a Systemic-Functional Theory of Images 6. Context, Register and Visual Potential: From Meaning Potential to Situation Type

The previous post argued that visual content is organised metafunctionally.

Like language, visual semiosis participates simultaneously in ideational, interpersonal, and textual meaning. These metafunctions do not constitute separate systems but complementary perspectives on the same meaning potential.

Yet meaning potential never appears as an undifferentiated whole.

Not every meaning possibility is equally relevant in every social situation.

A technical drawing does not draw upon visual meaning in the same way as an advertising campaign.

A weather map does not organise visual meaning in the same way as a religious icon.

A family photograph does not operate in the same region of visual potential as a scientific diagram.

The question is therefore unavoidable:

How does visual meaning potential become organised for particular social situations?

To answer this question, we must turn to two of Halliday's most important concepts: context and register.

Context as Semiotic Potential

In everyday discussion, context is often treated as a surrounding environment.

A text exists, and context is imagined as the external situation in which it occurs.

Halliday's conception is considerably more powerful.

Context is itself semiotic.

It is a higher level of symbolic abstraction realised by semiotic systems such as language.

From the perspective of the view from above, context is not something added to meaning after the fact.

It is the source of the values that semiotic systems realise.

This point is particularly important for visual semiosis.

Images do not acquire meaning independently of context.

Nor do contexts merely influence meanings that already exist.

Rather, visual meanings are intelligible because they participate in contextual values.

A courtroom diagram, a corporate logo, a traffic sign, and a wedding photograph each realise different regions of contextual potential.

To understand visual semiosis, we must therefore understand its relation to context.

The Instantiation Cline

The relationship between context and visual instances becomes clearer when viewed through the dimension of instantiation.

Instantiation is the cline from potential to instance.

At one pole lies the full semiotic potential.

At the other lies the individual semiotic event.

Between these poles lies an intermediate region.

Viewed from the potential end of the cline, this region appears as subpotential.

Viewed from the instance end, it appears as instance type.

These are not two different phenomena.

They are two perspectives on the same position within the cline.

This midpoint is where register emerges.

Register as Visual Subpotential

Register is often misunderstood as a collection of textual characteristics.

From a Hallidayan perspective, this is too narrow.

Register is a region of meaning potential associated with a situation type.

It is a subpotential.

A scientific article does not simply happen to exhibit certain linguistic characteristics.

It draws upon a particular region of linguistic potential.

Likewise, a technical illustration does not simply possess certain visual features.

It draws upon a particular region of visual potential.

This distinction is crucial.

The visual register is not the image itself.

Nor is it a list of recurring visual forms.

It is a region of visual meaning potential associated with a particular type of social situation.

From below, this same phenomenon appears as an instance type.

From above, it appears as a subpotential.

Both perspectives are legitimate.

The view from above, however, gives explanatory priority to the latter.

Field, Tenor and Mode

Halliday characterises context through three variables:

• field

• tenor

• mode

Field concerns the nature of the social activity.

Tenor concerns the social relations among participants.

Mode concerns the role played by semiotic activity itself.

These contextual variables are realised by meaning.

Consequently, they shape the organisation of visual meaning potential.

A medical imaging system, for example, participates in a different field from a fashion magazine.

A warning sign participates in a different tenor from a commemorative portrait.

A navigation map participates in a different mode from a work of gallery art.

The point is not that field, tenor, and mode determine visual form directly.

Rather, they differentiate regions of visual meaning potential.

Different contexts call forth different visual registers.

Why Register Matters

The concept of register allows us to avoid two common errors.

The first is the assumption that all images draw upon the same visual resources.

The second is the assumption that meaning resides entirely within individual images.

Neither position is satisfactory.

Visual meaning is neither completely general nor completely particular.

Instead, it is organised through subpotentials associated with recurrent social situations.

A scientific diagram and a political cartoon may both be visual artefacts.

Yet they operate within different visual registers because they actualise different regions of visual meaning potential.

The distinction is not merely descriptive.

It is explanatory.

Register helps explain why particular meanings become available in particular situations.

Register and the View from Above

The significance of register becomes particularly clear when contrasted with feature-based approaches to visual analysis.

Suppose we observe that a set of scientific diagrams share certain visual characteristics.

A description of those characteristics may be useful.

But it does not explain why those characteristics recur.

A Hallidayan approach asks a different question.

What region of visual meaning potential is being actualised?

What situation type makes those meanings relevant?

What contextual values are being realised?

Again, explanation proceeds upward rather than downward.

The image is explained through its register.

The register is explained through context.

The observable instance is not treated as theoretically primary.

Towards Visual Systems

At this point, visual semiosis begins to appear in a new light.

We have identified:

• content and expression,

• context and semiosis,

• potential and instance,

• register as visual subpotential,

• metafunction as the organisation of visual content.

What remains unclear is how visual meaning potential itself is organised.

If visual registers are regions of visual potential, what internal systems constitute that potential?

How are meaning distinctions related to one another?

How are selections made?

These questions lead directly to the next stage of the investigation.

The next post turns to the relation between system and structure. If visual semiosis possesses meaning potential organised into registers, what kinds of systems make that potential available, and how are those systems realised in visual structures?