Digital booths
Why the front row can be brighter than the back row
Use guest spacing and light distance to diagnose exposure differences between people at different depths.
A booth portrait can have one bright face and one dim face even when both stand under the same lamp. If the light is close, small changes in subject-to-light distance create larger exposure differences than they would with a distant source. That is a depth problem in the lighting geometry, not automatically a camera metering fault.
Check whether brightness follows distance
Photograph two people standing at their normal marks, then ask them to swap front and back positions without changing the light or camera. If the brighter face follows the position, the difference is spatial illumination. If it follows the person, inspect clothing reflections or face-specific metering. Keep exposure settings fixed during this diagnostic pair.
Evidence: Manufacturer photography education
Understand the distance effect
For a small source in an open setup, illumination falls rapidly as distance increases: doubling the distance reduces direct illumination to roughly one quarter. The exact booth result also depends on reflectors, diffusers, walls and source shape, so use this as a direction-of-change rule rather than a universal exposure prescription. A nearby light therefore produces stronger front-to-back variation.
Evidence: Manufacturer photography education
Choose a practical correction
First bring guests onto a shared depth mark and repeat the frame. If the booth must accommodate depth, move the source farther away and raise its output to restore exposure, then retest uniformity across the whole standing area. A larger apparent source can soften shadows, while greater distance can make its apparent size smaller; solve softness and depth uniformity as separate checks.
Evidence: Manufacturer photography education
Sources & further reading
Sources for the specific facts and product descriptions above. Our worked examples, interpretations and practical suggestions are original editorial guidance.
- Nikon School, Lighting: The Language of LightManufacturer photography education