Photography – Flash system responsive to focal length or distance
Patent
1998-05-11
1999-04-06
Adams, Russell
Photography
Flash system responsive to focal length or distance
396155, 396161, G03B 1502
Patent
active
058929878
ABSTRACT:
A flash-assisted photographing system including a camera having a taking lens capable of varying the focal length and a flash is provided with a light receiving unit having a plurality of receiving areas operable to separately receive light reflected by different areas of a photographic view, a detector operable to detect a focal length of the taking lens, and a controller operable to set weights for the receiving areas based on a detected focal length. Proper weights are set for the receiving areas even in the case of close-up photography which is highly influenced by camera shake. A main subject can be reliably exposed at a proper light emission.
REFERENCES:
patent: 4354751 (1982-10-01), Izumi et al.
patent: 4494850 (1985-01-01), Katsuma et al.
patent: 4746947 (1988-05-01), Nakai
patent: 4912495 (1990-03-01), Ishikawa et al.
patent: 5006879 (1991-04-01), Takagi et al.
patent: 5017956 (1991-05-01), Murata
patent: 5159384 (1992-10-01), Kageyama et al.
patent: 5255047 (1993-10-01), Ishimaru et al.
patent: 5602614 (1997-02-01), Ohtsuka et al.
patent: 5815743 (1998-09-01), Ohmori
Adams Russell
Minolta Co. , Ltd.
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