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20 METER COUPLING RANGE
20 Meter Coupling Range
With an FD 50mm f/1.4 lens and ISO 100/21◦ (ASA 100/21 DIN) film, the New Canon
EV (Exposure Value) is a numerical value of exposure which is based on proper combinations of shutter speed and aperture. The camera’s EV coupling range varies with lens speed and ISO film sensitivity.
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