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Old Mar 20, 2005, 5:20 AM   #22
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Join Date: Mar 2005
Posts: 6

I stand corrected on which line pairs mean what, a bit, but the Sigma curves are still better. The Sigma curves for 10 & 30 line pairs are higher than theCanon black pairs up to 11mm, and 11mm is the far corners a Canon sensor. I'll try to insert here a diagram of a 11mm radius circle of the Rebel XT sensor (not sure if I know how), in any case that sensor is 22.2 x 14.8mm, and only the far corners are more than 11mm from center:

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