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FILM MAGNETIC RECORD OF A RANGE INDICATION FOR EXPOSURE VALUES EXCEEDING THE CAMERA
FILM MAGNETIC RECORD OF A RANGE INDICATION FOR EXPOSURE VALUES EXCEEDING THE CAMERA
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机译:超出相机的曝光值范围指示的胶片磁记录
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摘要
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.
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