Exposure controlling means for a variable focus type camera

Details Exposure controlling means for a variable focus type camera Exposure controlling means for a variable focus type camera

1986-01-03

1988-02-09

Gellner, Michael L.

354421, 354435, G03B 7097

Patent

active

047244550

ABSTRACT:
An exposure control device for a camera capable of changing f numbers having a device for detecting an f number of a taking lens which constitutes factor A, a photometering device for detecting brightness of a subject as factor B, a device for detecting film speed as factor C, a memory containing a plurality of exposure values adapted to be addressed by a value of at least one factor selected from the group consisting of A, B, and C wherein the exposure values are predetermined by varying the value of the one factor and assuming the non-selected factor is constant, and a control device for determining a difference between a detected value and the assumed constant value of the non-selected factor, correcting the address of the exposure value based on the difference, and reading the corrected exposure value.

REFERENCES:
patent: 4355873 (1982-10-01), Carcia
patent: 4401373 (1983-08-01), Nalsai
patent: 4427276 (1984-01-01), Feinerman et al.
patent: 4492450 (1985-01-01), Watanabe et al.

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