Quote:
Originally Posted by kencaleno
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Two: If you meter a 13% grey tone (All meters are calibrated at 12.9% grey) this is nowhere near the same as an incident reading-light reflected from different tones will result in different exposure readings-where incident light which is falling on subject gives a constant exposure reading,no matter what the tone.
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My meters have K of 14 instead of 12.5 and the reflectance R of 17.6%. One has to know what to buy!