I recently bought this lens used and upon getting home noticed it has very strange focusing behavior.
The lens functions as normal with all apertures and AF points from its MFD to around 3 feet. After that, the motor becomes stuck and makes very small steps to try and focus, but is unable to move past that mark. Using manual focus also will not move the marker in the lens window past three feet. The focusing ring itself is very stiff.
Also, is it normal for the focusing ring to be turning during autofocus? My 85 f/1.8 does not do this. The focusing ring acts independently from the motor.
The lens was in a hot car all day, so I'm currently letting it chill in the refrigerator to see if the problem is that simple. Otherwise, I may be out of luck. It was a craigslist deal, and I'm not sure how willing the original owner will be to accept it back. I took a test shot in the parking lot and thought everything was fine as the object I chose was in the range that the lens currently works at. Now I know to test plenty of ranges when buying these things used :-\
I do have the warranty card all blank and able to be filled out, though I don't have any experience sending in or exchanging lenses with Canon. What can I expect if I try to send it in?
The lens functions as normal with all apertures and AF points from its MFD to around 3 feet. After that, the motor becomes stuck and makes very small steps to try and focus, but is unable to move past that mark. Using manual focus also will not move the marker in the lens window past three feet. The focusing ring itself is very stiff.
Also, is it normal for the focusing ring to be turning during autofocus? My 85 f/1.8 does not do this. The focusing ring acts independently from the motor.
The lens was in a hot car all day, so I'm currently letting it chill in the refrigerator to see if the problem is that simple. Otherwise, I may be out of luck. It was a craigslist deal, and I'm not sure how willing the original owner will be to accept it back. I took a test shot in the parking lot and thought everything was fine as the object I chose was in the range that the lens currently works at. Now I know to test plenty of ranges when buying these things used :-\
I do have the warranty card all blank and able to be filled out, though I don't have any experience sending in or exchanging lenses with Canon. What can I expect if I try to send it in?