Full/fill flash control system for cameras

Details Full/fill flash control system for cameras Full/fill flash control system for cameras

1988-01-19

1988-09-20

Adams, Russell E.

354421, G03B 1505

Patent

active

047729104

ABSTRACT:
An artificial illumination control system for controlling the energization of an electronic flash device during a photographic exposure interval in a camera automatically operates in a full flash mode whenever the ambient light level is too low for a proper daylight exposure and the camera-to-subject distance does not exceed a maximum distance suitable for a full flash exposure. Moreover, it automatically operates in a fill flash exposure whenever the ambient light level is bright enough that areas of the subject may be substantially shadowed and the camera-to-subject distance does not exceed a maximum distance small enough to ensure that the fill flash output will lighten the shadowed areas. The maximum distance for a fill flash exposure is always less than the maximum distance for a full flash exposure.

REFERENCES:
patent: 3610122 (1971-05-01), Biber
patent: 3696721 (1972-10-01), Wagner
patent: 4023187 (1977-05-01), Shenk
patent: 4074287 (1978-02-01), Iwata et al.
patent: 4083058 (1978-04-01), Iwata et al.
patent: 4159870 (1979-07-01), Corey et al.
patent: 4238154 (1980-12-01), Biber et al.
patent: 4291959 (1981-09-01), Easterly
patent: 4317620 (1982-03-01), Coppa et al.
patent: 4354751 (1982-10-01), Izumi et al.
patent: 4375322 (1983-03-01), Coppa
patent: 4429969 (1984-02-01), Saegusa
patent: 4484807 (1984-11-01), Kataoka et al.
patent: 4494851 (1985-01-01), Maida et al.
patent: 4501481 (1985-02-01), Kataoka et al.
patent: 4527880 (1985-07-01), Okino
patent: 4712902 (1987-12-01), Hosomizu et al.

Affiliated with

Also associated with

Rating

Full/fill flash control system for cameras does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Full/fill flash control system for cameras, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Full/fill flash control system for cameras will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1751495