Dual mode camera exposure meters

Details Dual mode camera exposure meters Dual mode camera exposure meters

1980-05-16

1982-12-21

Arnold, Bruce Y.

Optics: measuring and testing

Photometers

Photoelectric

G01J 144

Patent

active

043646620

ABSTRACT:
With an exposure meter usable in both reflected light mode and incident light mode, the exposure meter is capable of displaying a value measured in reflected light mode with a reflected light mode attachment mounted on the exposure meter, and a value measured in incident light mode with an incident light mode attachment mounted thereon.

REFERENCES:
patent: 2389617 (1945-11-01), Freund
patent: 2766654 (1956-10-01), Stimson et al.
patent: 3697179 (1972-10-01), Pfaffenberger et al.
Minolta System Handbook; SR-T101; SR-T100; SR-M, Joseph D. Cooper; 1972; pp. V-52 to V-63.

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