1991-10-10
1994-06-07
Gellner, Michael L.
G03B 708
Patent
active
053194160
ABSTRACT:
An exposure calculation device for cameras is equipped with: a divisional photometry device having a plurality of photometer elements for performing photometry respectively on each of a plurality of divisional areas constituting a field; a photoelectric transfer element array for performing photometry on at least a part of the field; an edge detection device, which determines a boundary section defining on the photoelectric transfer element array a higher-photometry-output region and a lower-photometry-output region and which outputs edge information on this boundary section; a selection device, which selects at least one of the photometer elements of the divisional photometry device on the basis of the edge information, exposure calculation being enabled by the photometry output of the photometer element thus selected; and an exposure calculation device, which calculates a correct exposure for a principal object in the field on the basis of the photometry output of the selected photometer element.
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patent: 5128707 (1992-07-01), Muramatsu
Patent Abstracts of Japan, vol. 8, No. 271, (P-320) (1708) Dec. 12, 1984.
Gellner Michael L.
Nikon Corporation
Noh Jae N.
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