o·ver·ex·pose 
(ō′vər-ĭk-spōz)
(ō′vər-ĭk-spōz)tr.v. o·ver·ex·posed, o·ver·ex·pos·ing, o·ver·ex·pos·es
1. To expose too long or too much: Don't overexpose the children to television.
2. To expose (a photographic film or plate) too long or with too much light.
o′ver·ex·posure (-ĭk-spōzhər) n.