Exposure calculating device

Details Exposure calculating device Exposure calculating device

1989-10-16

1991-04-09

Perkey, W. B.

354410, G03B 708, G03B 1336

Patent

active

050068768

ABSTRACT:
An exposure calculating device including a device for automatically adjusting a focusing condition of an object of lens to produce an in-focus signal when the objective lens has been adjusted to its in-focus position, a device for producing a lock signal in response to a manual operation independent of a shutter-release operation, the lock signal being effective even if the in-focus signal has not been produced. The exposure calculating device further includes an apparatus for measuring brightness of an object field to produce brightness information corresponding to the measured brightness, a device for storing the brightness information, an apparatus for controlling the storing device to store the brightness information in response to the in-focus signal or the lock signal, and a device for interrupting the operation of the controlling device when the brightness information has been stored in response to the lock signal even if the in-focus signal is produced.

REFERENCES:
patent: 4514073 (1985-04-01), Taniguchi et al.
patent: 4690536 (1987-09-01), Nakai et al.
patent: 4693581 (1987-09-01), Yamaki et al.
patent: 4769663 (1988-09-01), Yamaki et al.

Affiliated with

Also associated with

Rating

Exposure calculating device does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Exposure calculating device, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Exposure calculating device will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2037914