Photographic white background plate

The graying of the background is caused by the underexposure of the background, because the background and the subject are not in the same focal plane. You use a light source to illuminate the subject and get the correct exposure, but the background is far away and the light decays with the distance, so the light reaching the background is not bright enough.

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There are generally two ways to solve the problem of gray background:

1 Add one or two background lights. Keep the background slightly away from the subject, and then highlight the background with background light, so that the background can be painted dead white.

2 later, use ps and other software to cut the picture. Cut off the main body first, and then change it into a pure white background.