Photometering apparatus of camera for variably weighting differe

Details Photometering apparatus of camera for variably weighting differe Photometering apparatus of camera for variably weighting differe

1991-06-04

1994-02-22

Gray, David M.

354432, G03B 300, G03B 708, G03B 1336

Patent

active

052892255

ABSTRACT:
A photometering apparatus for a camera is provided that includes a split type photometering device for measuring the luminance of an object to be photographed and in which an image area is divided into a plurality of object luminance measuring zones, an automatic focusing device which selectively has a focus lock mode in which once an object within an object distance measuring is in focus, the focus is maintained, and a non-focus lock mode in which the focus is continuously adjusted within the object distance measuring zone. The photometering apparatus also includes an exposure controller which varies the weighting of the luminance signals of the object luminance measuring zones of the split type photometering device, in order to calculate an exposure value, depending on the selection of the focus lock mode or the non-focus lock mode.

REFERENCES:
patent: 4774401 (1988-09-01), Yamada et al.
patent: 4937611 (1990-06-01), Miyazaki
patent: 5146258 (1992-09-01), Bell et al.

Affiliated with

Also associated with

Rating

Photometering apparatus of camera for variably weighting differe does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Photometering apparatus of camera for variably weighting differe, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Photometering apparatus of camera for variably weighting differe will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-175545