Frank Peeters

Hi there, I recently had a chance to get hold of a vintage Kowa Anamorphic (see attachment photo). It has a rather small rear thread (39mm) ... so I was wondering if I could fit it somehow on the thread of a 50mm nikon lens? Is that possible with step-down rings, or are there problems? Also, maybe it's possible to mount a leica lens (with 39mm thread) to the canon 7d? An lastly, it seems like you can reverse-mount an anamorphic lens? Anyone got some tips & advice? Greets, Frank