Image sensing device and control method thereof

Details Image sensing device and control method thereof Image sensing device and control method thereof

2007-09-18

2007-09-18

Perkey, W. B. (Department: 2862)

Photography

Control circuit for sequencing at least three functions

C396S067000, C396S157000, C396S161000, C396S166000

Reexamination Certificate

active

11114871

ABSTRACT:
An image sensing device allows to shoot an image using correct object distance information and light emitting amount when the main light emitting amount upon shooting an object image is calculated by making the pre-light emission after the auto-focusing process. When a predetermined button independent of a release button is operated, a focusing process is executed first. Then, photometry is made while inactivating a strobe, and an exposure value is determined based on an object distance. Then, pre-light emission is made, light reflected by the object in the pre-light emission is measured, and the photometry result under the available light is subtracted from that in the pre-light emission, so as to obtain a brightness value of object reflected light of only the pre-light emission.

REFERENCES:
patent: 6167202 (2000-12-01), Fukui
patent: 60-61733 (1985-04-01), None
patent: 61-156239 (1986-06-01), None
patent: 61-156240 (1986-06-01), None
patent: 03-287240 (1991-12-01), None

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