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30 Aug 2017 PSA: Canon issues service notice for EF 50mm F1.4 focus issue The focus issue happens in both AF and MF modes, when you move from 8 Dec 2012 This is a known issue with the EF 50mm f/1.4. Sometimes turning the manual focus ring very fast will push the focus mechanism past Always storing your EF 50mm f/1.4 with the focus set to infinity will help protect your lens Hi All, I have a Canon 50mm f/1.4 which I bought roughly nine years ago. Is there an issue with this lens body combo or is it just the lens. They put full time manual focus on a micro-USM motor (not the usual ring-USM Canon EF 50mm f/1.4 USM Canon EOS 600D (EOS Rebel T3i / EOS Kiss X5) . If you have focus issues on a good target where the focus point is directly on that target, So, automatic was working good but manual don't. 30 Aug 2017 Check to see if your Canon 50mm 1.4 USM Is An Affected Unit. “While in AF or MF mode, when the focus position is moved from the infinity 12 Jul 2013 22 Jan 2008 (Note: I've posted a topic in the other Canon 50mm f/1.4 group, as I was .. I just had the same problem: AF and MF both locked for no apparent 6 Feb 2014 Focusing issues with Canon 50mm f/1.4 USM . No question, depending on the shooting conditions, Live view + manual focus will yield I know two friends of mine who shoot with their 50mm f/1.4 lens all the . When I had the problem neither AF nor MF could focus closer than