Question about Canon 28-135mm f/3.5-5.6 EF IS USM AF Lens
It seems if my Canon 50D is on for awhile, the lens will begin adjusting the f/stop. I think is what it's doing since the f/stop will flash between what I have it set to and 0.0. At one point I got an error message saying the lens contacts were dirty. Is this a problem with the lens or the camera? Thanks
Check out the mirrors on the camera, This is a pretty popular problem with the canon cameras. The lens gets dirty in the camera and it sends a error code
Posted on Feb 08, 2009
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Posted on Jan 02, 2017
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