Strobe light photographing system

Details Strobe light photographing system Strobe light photographing system

2005-06-07

2005-06-07

Perkey, W. B. (Department: 2851)

Photography

Flash system responsive to focal length or distance

C396S157000

Reexamination Certificate

active

06904233

ABSTRACT:
This disclosure relates to performing proper strobe light photographing which is almost free from the influence of the object reflectance and an autofocus detection error. This disclosure includes a first calculation unit which calculates first photometry data on the basis of a photometry value obtained by a photometry unit for measuring light reflected by an object to be photographed by preliminary emission, an object distance detection unit (#120) which detects object distance information, a second calculation unit (#121) which calculates proper second photometry data corresponding to the object distance information, a third calculation unit (#122and #123) which calculates third photometry data on the basis of the calculation results of the first and second calculation units, and a control unit (#124to #126) which controls an main emission amount and performs strobe light photographing on the basis of the calculation result of the third calculation unit.

REFERENCES:
patent: 5892987 (1999-04-01), Ohmori
patent: 6240253 (2001-05-01), Yamaguchi et al.
patent: 6577820 (2003-06-01), Yamaguchi et al.
patent: 2004/0170420 (2004-09-01), Fukui
patent: 3-287240 (1991-12-01), None

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