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dperry23

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dperry23 Registered since 02nd Mar 2013
Sun 10-Mar-13 04:24 AM

According to my calculations, 2.8,4,5.7,8,11.3,16, and 22.6 should be the standard f-stops that half or double area of the diaphragm. How did we get the standard f-stops we have, and did we come to expect they half and double light on sensors?

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