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Old Jan 5, 2009, 6:15 PM   #1
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Earlier today, I was screwing on a UV filter on the end of my EF-S 18-55 kit lens. I had the camera powered off, but when I started to tighten the lens up, I noticed the focus section of the lens moved and it was not locked into place. I then moved it back about a quarter of a turn. However, when I set the lens from AF to manual focus, this section of the lens turns very freely as it should.

My question is, did I damage my lens in any by turning the focus ring while the lens was set to AF mode? You can feel the torquing effect on the lens when it turned in both directions. I took a few photos afterwards and they seem fine, but I am worried that I might have damaged the gears or motor in my lens somehow.


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Old Jan 5, 2009, 7:37 PM   #2
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I doubt it.

I once fell on my camera (point and shoot) and torqued the lens 45 degrees of to the side.

I just adjusted back to where it should be by hand, and used it successfully for about 2 years after that. I sold it to someone who gave it another hard 2 years of use.

Just try a few shots and if everything is hunky-dorey, your ALL SET!
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Old Jan 9, 2009, 2:58 AM   #3
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If this was done with the camera in the OFF state, there should be no problem as the AF motor is not operating. But be careful when the camera is ON.

Here's a quote from one of the reviews for your particular lens:

"The 58mm filter-thread-size front element rotates and extends during focusing - You should avoiding contact with it during autofocus. There is no focus distance window and no distance markings are provided. FTM (Full Time Manual) focusing is not available - manual focusing should only be done with the AF/MF switch in the MF position. The lens is not parfocal - changing the focal length requires re-focusing"
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