Light measuring device for a single lens reflex camera

Details Light measuring device for a single lens reflex camera Light measuring device for a single lens reflex camera

1981-12-01

1984-05-01

Perkey, William B.

354481, G03B 700

Patent

active

044457642

ABSTRACT:
A light measuring device for measuring the light in the field by means of a light sensing means sensing the light reflected of the shutter plane provided in the neighborhood of the image forming plane of the photographing lens or the film plane or both of them. In the optical path of the reflected light a change over means for changing over the light sensitivity distribution of the metering so as to enable the change over of the light.

REFERENCES:
patent: 3205796 (1965-09-01), Lieser
patent: 3536408 (1970-10-01), Norwood
patent: 3955208 (1976-05-01), Wick et al.
patent: 4040751 (1977-08-01), Baker et al.
patent: 4075640 (1978-02-01), Ueda et al.
patent: 4079390 (1978-03-01), Iwata et al.
patent: 4105300 (1978-08-01), Plummer
patent: 4142787 (1979-03-01), Ueda et al.

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