I have a problem with my canon 2x III extender and 70-200 F2.8 II lens, in that this combination always results in a soft image no matter what I try. No matter what, I cannot get anything in focus. It comes close, but it's always slightly blurred. My question is, is this normal? I've seen results where this combination seems to work well with other people, but I can't figure out what's wrong with mine. Does anyone have any suggestions, or experienced anything similar? The lens by itself is fine, it's only with the extender that it is soft. The obvious answer here seems to be that the extender is bad, but I bought it brand new and unfortunately don't have any other lens to test it with.
I will be sure to post example shots when I get home from work.
All help greatly appreciated!