My 100 mm canon L lens won't stay focused when i focus on close objects. Even with IS off & lens set on manual focus. It acts like it can't decide where/what to focus on.
Why won't my 100mm W/ macro (L lens) stay focused on close ups. I have the IS-off and the focus on manual. After focusing, the focus mechanism acts like it is searching and goes in and out of focus and does not settle on anything.
