I believe candela = foot candles, which is a measurement that old light meters used to use, then convert that to EV which then converts to shutter/aperture values. Usually this is all displayed and really all you have to do is match the reading to the shutter/aperture levels.
Meters haven't changed much, just got electronic.
The Important Ones - Mamiya: 7 II, RZ67 Pro II / Canon: 1V, AE-1 / Kodak: No 1 Pocket Autographic, No 1A Pocket Autographic
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