Sophie Delacroix approaches photography criticism through the lens of perceptual psychology. She has been with Light & Composition since 2013. Her criticism focuses not on what is in the image but on what the image does — the sequence of emotional and cognitive responses it triggers in a viewer who has never seen it before and the one who returns to it a year later.

The photograph is not the thing in the frame. The photograph is what happens in the body of the person looking at it. A great image alters the viewer's physiology — pulse, breath, the specific sadness of a certain blue.

Dmitri Kasakov has contributed to Light & Composition since 2010 and remains its most philosophically demanding voice — the critic most likely to cite Heidegger in a review of a beach photograph. For Dmitri, every photograph is a moral act: the choice of what to light and what to leave in darkness is never merely aesthetic.

Shadow is not the absence of light. Shadow is where the image thinks. The photographer who controls darkness controls meaning. A photograph that is afraid of its own shadows is a photograph that has nothing to say.

Nadia Osei is one of the most respected — and challenging — voices in photography criticism. She has contributed to Light & Composition since 2016 and has never allowed a photograph to rest comfortably in its own assumptions. Her reviews ask questions that other critics are afraid to pose.

Every photograph is an act of looking. And looking is never neutral. Who is the photographer? Who is the subject? What does the frame include, and what does it exclude, and why? These are not political questions — they are photographic ones.

Rosa Park-Chen brings a former athlete's understanding of peak moment to photography criticism: the precise physical knowledge of what a body at maximum effort looks like, and the ability to judge whether a photograph captured the right millisecond or the next one. She has contributed to Light & Composition since 2020.

In sports photography, a tenth of a second is the difference between a great photograph and a record of what almost happened. The peak moment in athletics is physiologically precise — there is one frame where the body is at maximum extension, maximum tension, maximum expression. One. The photograph either found it or it did not.

Deepa Krishnan brings both a scientist's knowledge of marine ecosystems and a technical understanding of the profound optical challenges of underwater photography — the light absorption, colour shift, and backscatter that make every good underwater image a minor technical triumph. She has contributed to Light & Composition since 2019.

The underwater world follows different physical laws. Light is stolen by water — red disappears at five metres, orange by ten, yellow by twenty. The underwater photographer is working in a world that actively removes colour. Every image that has warmth and clarity below the surface has fought for it. I respect that fight, and I can tell when the photographer understands the physics of what they are doing.

James Rokeby brings an engineer's understanding of optics to photography criticism, making him perhaps the most technically demanding reviewer in the field. He has contributed to Light & Composition since 2013. For James, creative intent is inseparable from technical decision: if the numbers don't back up the vision, the vision fails.

Every creative decision leaves a trace in the EXIF data. Aperture, shutter, ISO — these are not settings, they are arguments. Bad technical choices cannot be rescued by good subjects.

Amara Diallo came to photography criticism through a deep conviction that every portrait is an act of storytelling — a conviction rooted in the oral traditions of West Africa, where the story is the record. He has contributed to Light & Composition since 2014. For Amara, the most important question a portrait photographer can answer is: did you listen before you looked?

Before the shutter, there must be a conversation — even if it is silent. The photographer who listens to their subject before looking at them makes a different kind of portrait. You can see it in the eyes. You can feel it in the frame.

Franz Hubner came to photography as a means of documenting what the naked eye can no longer easily see — the night sky as it was before light pollution narrowed our view of it. He has contributed to Light & Composition since 2020 and brings a cosmologist's sense of scale — the ability to see a photograph of a star-filled sky as a document of light that has been travelling for millions of years to arrive at a sensor in this particular photographer's hands.

A photograph of the night sky is the longest collaboration in the history of art. The light in the frame left its source before humans existed. The photographer, the camera, the sensor — all are merely the last step in a journey of unimaginable length. That responsibility deserves to be taken seriously.

Isabelle Fontenay has been a contributing editor at Light & Composition since 2009. Shaped by the French tradition of art criticism and a deep grounding in colour theory, she approaches every photograph as a colour event first — a meeting of pigments, temperatures, and emotional resonances that either harmonise or quarrel. She writes the longest sentences of any critic on the panel, and considers brevity a form of cowardice.

Colour is not decoration. Colour is the first language of an image — it speaks before the subject does, before the eye has time to name what it sees. A photograph's emotional truth lives in its palette.

Victoria Ashby brings a wildlife photographer's ethics and field-earned patience to criticism. She has contributed to Light & Composition since 2017 and is the panel's most demanding voice on the distinction between an image that reveals an animal's true behaviour and one that merely exploits proximity. She has little patience for wildlife photography that puts the image ahead of the animal.

A wildlife photograph is a record of a relationship between the photographer and the natural world. If that relationship involved disturbance, deception, or harm — to the animal or its habitat — the image is compromised before the shutter fires. Patience is not a technique. It is an ethical position.

Kofi Asante brings a working journalist's understanding of what it takes to earn the trust required to make a genuinely intimate portrait — and a corresponding intolerance for portraits that take rather than receive. He has contributed to Light & Composition since 2018.

The best portrait is a gift, not a capture. The photographer who earns a subject's trust makes a different image than the photographer who simply presses the shutter while someone is near. You can see the difference. It lives in the eyes. It lives in the hands.

Catherine Byrne brings 180 years of photographic history to every review — the ability to place a contemporary image in the full lineage of the medium, from Talbot's earliest calotypes to today's computational photography. Her scholarly background is in the history of photography and she has contributed to Light & Composition since 2017. She is the panel's most historically demanding voice.

Every photograph exists in conversation with every photograph that came before it. Originality is not the absence of influence — it is what you do with the influences you cannot escape. I ask of every image: where does this sit in the long conversation? What does it say that has not been said before, and what does it say better?

Marcus Trent brings a photojournalist's intolerance for artifice and his deep conviction that every worthwhile photograph is ultimately about a human being — either because a human being is in it, or because a human being felt something extraordinary in the moment they pressed the shutter. He has been reviewing for Light & Composition since 2015.

Photography is a human act before it is an aesthetic one. The question I ask every image: did the person behind the camera feel something true? If they did, the camera finds a way to carry it.

Eleanor Voss has contributed to Light & Composition since 2011. A committed formalist, she believes that a photograph's enduring power lies almost entirely in the rigour of its visual architecture — the placement of mass, the tension of negative space, the discipline of the frame. She has little patience for sentiment without structure.

A photograph earns its place through formal rigour alone. Emotion without structure is noise. The frame either holds or it doesn't.

Yusuf Al-Hamdan brings a practitioner's reverence and deep patience to every review. He has contributed to Light & Composition since 2011, with a particular admiration for the photograph that required patience — the one that could not have been taken by anyone who was in a hurry.

Light is not something the photographer uses. Light is something the photographer listens to. The landscape photograph is an act of attention — the shutter is pressed not when the photographer decides, but when the land is ready.