Camera with variable aperture member

Details Camera with variable aperture member Camera with variable aperture member

2008-07-01

2008-07-01

Ye, Lin (Department: 2622)

Television

Camera, system and detail

Optics

C348S370000

Reexamination Certificate

active

10809494

ABSTRACT:
A camera has a photometry section. The photometry section measures brightness of field when an aperture member is of a predetermined first aperture caliber which is a relatively large aperture caliber, and measures the brightness of field in halfway through change over of the aperture member from the first aperture caliber to a predetermined second aperture caliber which is relatively smaller than the first aperture caliber when a photometry of the brightness of field is impossible because of an exposure over with the first aperture caliber.

REFERENCES:
patent: 5517243 (1996-05-01), Kudo et al.
patent: 5646769 (1997-07-01), Sato et al.
patent: 6618090 (2003-09-01), Kidono et al.
patent: 6693673 (2004-02-01), Tanaka et al.
patent: 04-223450 (1992-08-01), None
patent: 2580105 (1996-11-01), None
patent: 11-215440 (1999-08-01), None

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