My Canon glass isn't so hot on the 1Ds Mk. III...

Started Feb 2, 2013 | Discussions thread
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Re: My Canon glass isn't so hot on the 1Ds Mk. III...
In reply to CanonKen, Feb 3, 2013

How do you know its not just significantly thinner DOF or plane curvature at play near the edges?  Another issue is you only hunted for good copies of lenses on APS-C and never got to see if they really had edge issues for FF (although usually if its really stellar on APS-C its pretty good on FF).

Unless you are absolutely sure about your plane of focus, you cannot simply pixel peep the edges of any arbitrary photo to judge focus.

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