Comparing macro lenses using MTF - part III - 0.66x
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I did a quick check of the 75ARD2 for CA using a resolution target at 2x. Here it is focused high, critically-focused, and focused low. The focused-high image shows red fringing, while focused-low shows green fringing. Looks like it resolves Group 7 #3 and almost #4, but I think that may be sensor limitations. These were shot wide open f4.5.