“The Deletion Filter”: Why Successful Photographs Work.

Think of every image as a car on a motorway. The traffic is moving at high speed. At one end, the cars (images) start on the motorway at the eyes, and they simply disappear at the other end unless something stops them. You don’t realise they exist because it’s all subconscious.

On this motorway, every car passes under a “speed camera” (filter). The camera only needs a fraction of a second to assess each car. If a car triggers the “speed camera”, then it’s directed off the motorway for detailed investigation. If not, it stays on the motorway and is ignored.

It is absolutely critical that your photograph triggers that “speed camera”. If it doesn’t, it will be treated as normal background noise and ignored. You must get your photograph off the motorway and divert it from the viewer’s subconscious level to their higher conscious mind.

In that fraction of a second, the “speed camera” (filter) looks for a combination of signals. No one signal is enough; it’s the combination that triggers the “speed camera” to divert the car (image) off the “motorway” for secondary investigation. – The five criteria the brain uses are:

The brain automatically prioritises potential threats, opportunities, or biologically important cues that could affect our well-being. The “fight or flight” response is a fast and subconscious response to danger. It immediately directs processing toward what matters first: our survival.

Relevance to photography: Images often fail because they don’t feel biologically relevant – no people, action, or consequences. The brain prioritises information related to movement, life, time, and events. A moment in time, or the presence of humans, triggers curiosity.

The brain rapidly classifies the image into broad categories: face, car, landscape, building, by using simplified shapes and familiar visual patterns drawn from prior experience. This allows fast, efficient identification and sorting without detail, precision, or conscious analysis.

Relevance to Photography: Many images are confusing, ambiguous or cluttered, making the subject hard to identify. The brain struggles to decode the picture’s content. Order, structure, emphasis, and simplicity improve visual efficiency for understanding the picture’s content.

The brain determines whether the image represents a “3D Environment” (Place), an indoor or outdoor scene, or a “2D Graphic” (Pattern). Information that helps us build a mental 3D model of our location and context within the world for navigation is given higher priority.

Relevance to photography: Without spatial clarity, the depiction of three-dimensional form and spatial distance, the brain cannot orient itself. The brain gains little value in 2D patterns. We need to convince the brain into thinking it’s seeing convincing evidence of the real world.

Have I seen this before, based on my prior knowledge and experience? – Is it novel and new that could benefit me in the future, or is it similar to what I already know and offers nothing better or beneficial? If I already know it, it’s a waste of my limited resources to investigate it.

Relevance to photography: Literal, generic images rarely succeed. Simply recording a scene usually creates an image we have seen before; they lack novelty and fail to trigger curiosity. We must try to avoid giving the viewer “what they predict to see” or “have seen before”.

The brain assigns a subconscious “feeling”, tagging images as positive, negative, or neutral based on prior emotional knowledge and experience, whether the image feels rewarding, threatening, meaningful, or safely ignorable: meaning there’s no benefit in investigating it.

Relevance to photography: We “feel” an image before we consciously understand it. – Many photos are emotionally flat or dull, with a neutral mood and atmosphere, causing the brain to ignore them. Expressive mood or tension, triggers mental stimulation and engagement.

If the brain’s initial investigation determines that there isn’t enough beneficial information in the image, that image never reaches the viewer’s conscious level required to engage, enjoy, or think about it. The result is a viewer bypasses your photo without giving it much thought, because they see no value in committing their limited time and resources to think about it.

The very few cars (images) that are diverted off the motorway will now undergo a secondary inspection using the same five criteria, but at a much more detailed level. – The brain must be confident that the information is worth saving; long-term memory is a limited resource.

At this stage, the image is evaluated at a conscious level but in temporary memory (RAM). If the investigation is successful, the car (image) is released from secondary inspection, and it’s written to long-term memory (hard drive). Viewers now mentally engage with the picture.

If unsuccessful, the RAM is simply overwritten by the next car (image) in the queue, and our car (image) simply “disappears”. – This entire process is called “KEEP or DELETE”, and it takes up to a couple of seconds. Dopamine is often felt as a reward for a “KEEP” decision.

However, secondary investigation has a queue of cars (images), and it can’t spend too long investigating one car (image). If the image is confusing and not “visually efficient”, it also fails secondary investigation, because it would cause a “bottleneck” or traffic jam in the queue.

Everyone on the planet uses the same process to process visual information – it’s part of our brain’s basic operating system. We can’t change the process, but we can change the product we give the brain to process, our pictures. – The brain dictates the rules, not photographers.

The knowledge is worth its weight in gold: Viewers are, by default, pre-programmed not to want your photograph unless you give them a reason. You give them a reason by satisfying the five criteria of the filter. – If you don’t, your photographs fail. – Science, not opinion.

Don’t believe me. Simple, look at any image you like or don’t like. – Apply the five criteria to those images and see which criteria are present in photographs you like, and not present in images you don’t like. – Literal and generic-looking images fail No 4: Salience.

Like and successful are different subjects. You may not “like” this photo, but it works because your brain engages with it; therefore, it’s “successful”. – Why? Let’s examine the five criteria:

The car indicates a minimal human presence. Something living, time, or an event.

The scene’s over-simplification makes the isolated building instantly understandable.

The building’s three-dimensional form and flat background create a feel of spatial depth.

Transforming the scene creates an image that “We don’t predict to see” in a London street.

The image has a distinct, dystopian, surrealist emotional tone; it’s not neutral or forgettable.

How you control and apply the criteria creates your unique style, and when you previsualise your “style” on a subject before you take a photo, becomes your “Vision”. Authenticity comes from “Having something to say”, “Vision & Style” come from “How you say it”. All “Intentional”.

Most photos don’t fail due to technical issues with equipment – they fail because they don’t pass the viewer’s visual investigation. You must adapt your photo to the viewer’s process; the viewer cannot adapt their process to your photo. This is a simple and unbreakable RULE.