Magnetic recording on film of beyond camera exposure value range

Details Magnetic recording on film of beyond camera exposure value range Magnetic recording on film of beyond camera exposure value range

1989-09-11

1991-04-09

Adams, Russell E.

354 21, 354105, G03B 700

Patent

active

050068784

ABSTRACT:
The camera of the invention includes a magnetic recording head adjacent the film and a processor which senses the lens focal length, the aperture size, the shutter speed and the film ISO number or film speed, and makes the following determinations: First, it determines from the scene brightness and film speed whether the ideal combination of shutter speed and aperture size, in terms of a required exposure value, falls within the range of maximum and minimum shutter exposure times and aperture sizes of which the camera is capable of providing, expressed in terms of a minimum camera exposure value and a maximum camera exposure value. If the ideal exposure value for that scene falls outside the range of camera exposure values, then the processor causes a magnetic recording head to magnetically record in or adjacent the current film frame a coded indication symbolic of the fact that the required exposure value was beyond the camera exposure value range.

REFERENCES:
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patent: 4864332 (1989-09-01), Harvey
Kodak Publication, H-1-9000, Eastman Kodak Co., 1983.
Kodak Publication, V3-517, Eastman Kodak Co., 1984.

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