Scanning shutter blade arrangement with dynamic apertures for am

Details Scanning shutter blade arrangement with dynamic apertures for am Scanning shutter blade arrangement with dynamic apertures for am

1980-07-07

1981-10-27

Adams, Russell E.

354 29, 354147, 354230, 354247, G03B 708

Patent

active

042970164

ABSTRACT:
An exposure control system for a photographic camera apparatus of the type preferably having a fixed focus and a built-in electronic flash includes a scanning type shutter blade arrangement wherein the shutter blade elements have especially configured scene light admitting apertures which generally scan to an intermediate sized aperture during the predominantly ambient scene lighted mode of operation to provide a correspondingly increased depth of field and which scan to a maximum size aperture during the predominantly artificial scene lighted mode of operation to provide for a maximum effective range for the flash.

REFERENCES:
patent: 3873987 (1975-03-01), Brauning et al.
patent: 3893134 (1975-07-01), Brauning et al.
patent: 4005448 (1977-01-01), Iwata et al.
patent: 4008481 (1977-05-01), Whiteside
patent: 4023187 (1977-05-01), Shank
patent: 4047190 (1977-09-01), Johnson et al.
patent: 4058817 (1977-11-01), Johnson et al.
patent: 4104653 (1978-08-01), Johnson et al.
patent: 4118721 (1978-10-01), Hashimoto

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