>For this test I put the 50/1.4 lens on 39mm of extension tubes and squared
>up the camera with the back cover of John Shaw's "Closeups in Nature" book.
>The center was in focus but the edges were way out of focus. I had to move
>the camera in about 7mm to get the edges in focus. Yikes! 7mm variance in
>focus between center and edge!
Ahh, the 3.5 is flat.
Foxy
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