Canon 40mm f/2.8 autofocus

Started Feb 10, 2013 | Discussions thread
Thorbard
Contributing MemberPosts: 677Gear list
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Re: Canon 40mm f/2.8 autofocus
In reply to JBreningstall, Feb 11, 2013

The issue, I think, is that the STM focus motor was designed for use with video and contrast detect autofocus, so it isn't intended to snap to focus the way that USM does.

Personally, if I want to photograph sports with a relatively short prime lens, I turn to my 85mm f1.8. Landscapes and out-and-about photography suits the 40mm well.

 Thorbard's gear list:Thorbard's gear list
Canon EOS 7D Canon PowerShot G15 Canon EF 85mm f/1.8 USM Canon EF-S 15-85mm f/3.5-5.6 IS USM Canon EF 40mm f/2.8 STM +1 more
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