Image pickup apparatus and photometer

Details Image pickup apparatus and photometer Image pickup apparatus and photometer

2008-07-15

2008-07-15

Ho, Tuan (Department: 2622)

Television

Camera, system and detail

Optics

C348S222100, C348S229100, C348S254000, C348S297000, C348S367000

Reexamination Certificate

active

10618699

ABSTRACT:
A received light quantity detection device where high-sensitivity pixels and low-sensitivity pixels are formed is used for photometry. It is possible to perform measurement over the low range (for example, 0[EV] through 8[EV]with a single occasion of photometry. In the case that both the high-sensitivity pixels and the low-sensitivity pixels are saturated, it is possible to perform further measurement over the high range (for example, 8[EV] through 16[EV]) by narrowing the aperture or increasing the electronic shutter speed for retried photometry with a retried photometry. This reduces the time required to calculate a correct exposure value on image pickup apparatus such as a camera.

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