Canon 40mm STM misfocus issues

Started Oct 11, 2012 | Discussions thread
Springf
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Re: Canon 40mm STM misfocus issues
In reply to Nightly, Nov 14, 2012

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.

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