Canon 40mm STM misfocus issues

Started Oct 11, 2012 | Discussions thread
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Springf Junior Member • Posts: 25
Re: Canon 40mm STM misfocus issues

Nightly wrote:

Springf wrote:

To me the 40mm focus well on 1-shot AF but seems doesn't do well on AI SERVO AF compare to the 50mm f/1.8


Does your lens can't focus well on AI Servo mode, or it misfocuses?

you know that in AI Servo mode, shutter release has priority, so the lens may not act faster enough to get a focus before the shutter is released. while in one shot mode, you cannot release the shutter until the camera locked the focus.

 Springf's gear list:Springf's gear list
Canon EOS 6D Sony Alpha 7R II Canon EF 50mm f/1.4 USM Canon EF 85mm f/1.8 USM Canon EF 40mm f/2.8 STM +3 more
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