... The canon is an EF-S lens. I've removed the dumper on mine so I can actually mount it on a EF body...
Sorry to ask another silly question but this is the bit I've been missing - whats the "dumper"? I've looked at the EF-S and EF mounts on my lenses and they look...well, the same to all intents and purposes. I have a funny feeling I'm missing something so blindingly obvious, its going to hurt when it hits me.....
EDIT: I dont think it'll hurt that much - is it the rubber ring?
)
). What made you stick with the 10-22? Thanks.

