Hi,
I have:
Tokina 11-16 - which is limited on the 5DII because it hits something (forgot which end)
On some lenses the rear element can hit the mirror and cause serious problems. That is not to say the Tokina is one of those lenses but see the thread at https://www.dpreview.com/forums/thread/3117620
and in particular the 2nd response by "wallybarthman" on how you can test the lens. Read the balance of the thread for some other limitations.


