Camera having proper exposure controlling function

Details Camera having proper exposure controlling function Camera having proper exposure controlling function

2005-07-19

2005-07-19

Gray, David M. (Department: 2851)

Photography

Exposure control circuit

Having plural photocells

Reexamination Certificate

active

06920286

ABSTRACT:
A camera includes a luminance distribution detecting unit, a changing point determining unit, and an exposure controller. The luminance distribution detecting unit detects distribution of brightness in a photographing picture. The changing point determining unit determines a changing point of a bright portion and a dark portion with reference to the distribution of brightness detected by the luminance distribution detecting unit. The exposure controller decides that exposure is to be executed on the bright portion or the dark portion based on a position of the changing point determined by the changing point determining unit.

REFERENCES:
patent: 4929824 (1990-05-01), Miyazaki
patent: 5128707 (1992-07-01), Muramatsu
patent: 5678098 (1997-10-01), Ishihara et al.
patent: 61-246711 (1986-04-01), None
patent: 2934712 (1999-06-01), None

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