Replacement for an EF-S 18-135mm

Started Oct 29, 2012 | Questions thread
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Re: Replacement for an EF-S 18-135mm
In reply to Chris Upchurch, Nov 3, 2012

Chris Upchurch wrote:

My Canon EF-S 18-135mm lens has started grinding the autofocus gears when I zoom in while shooting in burst mode.

You zoom during bursts? That sounds... creative. 

You only hear the grinding if you zoom while AI Servo is active? Or only if you are taking shots as well?

Are you confident that you don't restrict the motion of the focus ring while you turn the zoom ring? (Canon lens manuals tell us not to interfere with the motion of the focus ring, hence the delusion that touching the focus ring while the lens is switched to AF will break it.)

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