Photometry device for a camera

Details Photometry device for a camera Photometry device for a camera

1996-05-29

1997-01-07

Metjahic, Safet

Photography

Exposure control circuit

Color temperature compensation or detection

348362, 348366, 396234, G03B 708

Patent

active

055922562

ABSTRACT:
A photometric device for use in a camera includes, but is not limited to, a segmented brightness measuring unit which segments a photographic scene of a camera into multiple areas and which outputs corresponding multiple photometric values. A spectral analysis unit performs spectral analysis of the spatial frequency of a photographic subject using the corresponding multiple photometric values output by the segmented brightness measuring unit. Also, a photometric computation unit computes photometric values based on the spectral pattern of the photographic subject output by the spectral analysis unit. The spectral analysis unit may be disposed within the photometric device, or may be located elsewhere in a camera's body.

REFERENCES:
patent: 4395099 (1983-07-01), Terasita
patent: 4476383 (1984-10-01), Fukuhara et al.
patent: 4797942 (1989-01-01), Burt
patent: 5187754 (1993-02-01), Currin et al.
patent: 5233517 (1993-08-01), Jindra
patent: 5249015 (1993-09-01), Takagi et al.
patent: 5266984 (1993-11-01), Muramatsu et al.
patent: 5270767 (1993-12-01), Hamada et al.
patent: 5319416 (1994-06-01), Takagi

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