overexpose

verb (used with object), o·ver·ex·posed, o·ver·ex·pos·ing.

1. to expose too much, as to the sun, cold, or light rays (often used reflexively): Be careful of overexposing yourself to the sun.
2. Photography. to expose (a film or the like) to too much light.

verb (tr)

1. to expose too much or for too long
2. photog to expose (a film, plate, or paper) for too long a period or with too bright a light