G - Physics – 03 – B
Patent
G - Physics
03
B
G03B 17/24 (2006.01)
Patent
CA 2063722
The camera of the invention includes a magnetic recording head (30) adjacent the film (14) and a processor (32) 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 maxi- mum 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 (30) 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.
Eastman Kodak Company
Gowling Lafleur Henderson Llp
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