A photograph can look beautifully bright on a laptop and unexpectedly dark when you hold the print. The instinct is to increase the exposure and order again. Sometimes an edit is needed, but first check the conditions you are using to judge the image. A screen produces light; a print is seen by reflected light.

Start with screen brightness

A very bright display can make a darker file appear more luminous than it will look on paper. If you edit until the image looks right on that display, you may leave the file darker than intended. Aim for a consistent editing setup and avoid treating the brightest screen setting as your reference. A brightness percentage is not a universal calibration standard: different displays produce different light levels at the same setting.

Give the print fair lighting

Look at your print in even, neutral light rather than a dim hallway or beneath a strongly coloured lamp. Hold it so that glare does not obscure the image. Compare the same areas of the photograph each time, including a face, a midtone and a shadow with visible detail. If the print changes dramatically when you move rooms, the lighting is part of what you are seeing.

Keep automatic colour changes out of the comparison

Night-time display modes, automatic brightness and other viewing adjustments can alter the appearance of the screen while you work. Use consistent settings for a colour-sensitive comparison. Hardware calibration and profiling can make your workflow more predictable, but neither turns a luminous display into paper. The goal is a useful reference, not an identical physical experience.

Separate exposure from colour

Ask whether the whole image feels dark, whether only the shadows lose detail, or whether a colour shift is changing the impression. Those are different problems. Avoid a large global brightening adjustment when a particular area needs attention. Save a revised copy so you can compare it with your original rather than losing your starting point.

Make a controlled test

Use a familiar image and keep the paper, file and viewing conditions consistent between tests. DS provides file preparation guidance and a screen calibration test-image option. Follow the current instructions on that page, then change one thing at a time. A repeatable test is more useful than a series of increasingly bright guesses.

Read the DS file preparation guide