Getting the most out of the 17-40L 4

Started Jan 11, 2013 | Discussions thread
Veteran MemberPosts: 4,134Gear list
Re: Getting the most out of the 17-40L 4
In reply to Lee J Buckley, Jan 11, 2013

For optimal sharpness across the frame, I've found the following:

Stick to f11-f16

Manual focus only.  Focused to infinity setting is too far and corners will be soft.  Usually my focus scale is slightly before the infinity setting.

My results are sharp across the entire frame using these methods,

 gipper51's gear list:gipper51's gear list
Canon EOS 5D Mark II Canon EOS 6D Canon EF 17-40mm f/4.0L USM Tamron AF 28-75mm F/2.8 XR Di LD Aspherical (IF) Tamron SP AF 17-35mm F/2.8-4 Di LD Aspherical (IF) +4 more
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