Canon 60D Will NOT focus! Help!
-On any picture mode, including fully automatic, AF will never focus. The lens tries to focus, then settles on something blurry like it found its focus
-AF and IS buttons have been turned on/off to see if anything changes
-MANUAL focus will also *not* work in any picture mode regardless of AF switch position
-When I go to video mode, I am able to focus the camera manually. AF also works but seems very slow to focus even with a lot of light.
Camera is 1 month old, with a used Canon 18-135mm lens, which was purchased from a professional photographer. I am guessing he took very many pictures with it, and perhaps the motor started dying so he decided to sell it off. However I do not understand why it would focus in video mode and not any picture mode.
What could the causes be?