Upload & Sell: Off
It definitely seems the lens is Praktica bayonet mount (called B-mount) one, and unfortunately
your lens is very difficult to mount on EOS camera. One there is no adaptor available, two the back of B-mount lenses are too big for EOS mount, so the mirror hits the back of B-mount lens even if you have appropriate mount adaptor, which I made myself. Yes you can use this on CANON 300D/350D cameras since their mirror is small and itr retractable movement makes bigger clearance for B-mount lenses. But you cannot use these B-mount lens on 5D or
any normal EOS mount film cameras except EOS-RT (pericule mirror) I guess.
hope this helps.../koji