What a screen photograph has to do
A photograph of an object on an exhibit screen usually has a narrower job than a catalog photograph. It has to show a visitor what the object looks like, give a sense of its size, and stay legible on a display that may be viewed from a meter or two away, in a room with its own lighting. Fine documentary detail matters less than a clear, honest, well-framed image.
Good object photography rests on three decisions that can be made before anyone picks up a camera: how the object is lit, how its size will be conveyed, and what sits behind it. The rest is largely consistency and care.
Lighting
Lighting does more to determine whether a photograph looks professional than the camera does. The aim is to show form and surface without harsh shadows or bright hot spots.
- Use a large, soft light source. A light that is large relative to the object, such as a window with a diffuser or a softbox, produces gentle shadows. A small bare bulb produces hard shadows and glare.
- Light from the side and slightly above. This tends to reveal shape and texture. Lighting from directly behind the camera flattens the object.
- Add fill. A white card or reflector opposite the main light lifts the shadows so detail is not lost.
- Keep the color of the light consistent. Mixing daylight with indoor bulbs gives uneven color. Using one type of light, and including a neutral gray or color reference card in a test frame, helps keep colors predictable from session to session.
Reflective objects, such as glazed ceramics, metal, glass and varnished surfaces, are the hard cases. A large soft light placed to one side, sometimes with a diffusing panel between the light and the object, usually gives a smoother highlight than a direct lamp. Polarizing filters can reduce some reflections, although they do not remove all of them.
Handling comes first. Fragile or light-sensitive items may have limits on how long they can be under lights or how they may be moved. Those decisions belong to collections staff, and the photography plan should follow them, not the other way around. The wider question of how digitization supports preservation is covered under digital surrogates, and the broader effect on collection care is worth reading alongside this article.
Showing scale
A screen has no inherent scale. A coin-sized brooch and a dinner plate can fill the same display, so the image needs help.
- Place a ruler or a scale bar in a documentation shot, not necessarily the exhibit shot.
- Include a caption or label stating the dimensions in plain language.
- Where it suits the design, add a small silhouette or drawn outline of a hand or a familiar object beside the image.
- Be consistent. If most objects in a group are photographed at the same distance and then displayed at the same size, the screen will give a false impression of equal size. Either show dimensions every time or vary the display size deliberately.
Scale bars generally look out of place in an image meant for the public, so many teams keep two versions: a clean image for the exhibit and a documentation image with a scale and color reference for the record.
Backgrounds
A background should support the object and then disappear.
- Neutral colors such as mid gray, off-white or a soft dark tone usually work best. Pure white can cause light-colored objects to blend in, and pure black can swallow dark ones.
- Choose by contrast. Put pale objects on a darker backdrop and dark objects on a lighter one. This is the same reasoning behind color contrast guidance for text on screens, applied to images.
- Keep it smooth. A seamless paper or fabric sweep that curves from the surface to the wall avoids a visible horizon line.
- Keep it clean. Dust, creases and shadow edges on the backdrop are surprisingly visible once the image is enlarged.
Cutting an object out and placing it on a flat color is common, but it removes shadow and context and can make an object look as if it is floating. If a cutout is used, it is worth keeping a subtle shadow so the object still seems to rest on something.
Framing, angle and distortion
Shooting from further back with a longer lens, then cropping, usually distorts shape less than shooting close with a wide lens. Keep the camera level with the object, or deliberately choose a slightly raised angle for flat items, and keep the camera steady on a tripod. Leave some empty space around the object so it can be cropped for different screen shapes later. A portrait-format display and a wide video wall need different crops of the same shot, and tight framing leaves no room to adapt.
Shoot a consistent set where possible: a front view, a side or back view, and one or two details such as a maker’s mark or a damaged area. Consistency across a group helps visitors compare objects and helps the display team build layouts quickly.
Planning for the screen
Before a shoot, find out what the images are for. A phone-sized web viewer, a touchscreen and a large wall all treat images differently, and display types vary in brightness, contrast and color accuracy. A photograph that looks balanced on a calibrated monitor can look washed out or too dark on a bright gallery screen, so testing a sample image on the actual hardware early is worth the effort. Lighting in the room also matters; glare on the display can hide shadow detail that took effort to capture.
Shoot at a higher quality than the screen strictly needs, because crops, zooms and later reuse all draw on the original. Decisions about final pixel dimensions and delivery formats are a separate step, treated under image resolution, and rights questions such as image permissions should be settled before images are published.
For visitors with low vision, a clear subject, strong separation from the background and a written description of what the picture shows all help. A photograph is not a substitute for a text description, because some visitors will not see the image at all.
A simple starting kit
A small team can get consistent results with a tripod, a camera with manual controls (a recent phone can work for modest uses), one large soft light and a reflector card, a roll of neutral backdrop paper, and a reference card for color. Write down the setup: distance, light position, backdrop and settings. If a different person photographs the next batch a year later, those notes are what keep the collection looking like one set.