I just bought a lens on eBay... it was a video camera lens, so I (mistakenly) assumed that it would mount onto my C-mount adapter. Turns out it has a bayonet mount on the back, so I need a different adapter for it. I couldn't find an adapter online for Canon video lenses... does anybody know what I'd need for it? It says Canon "VL" on the side. Apparently, that's a particular kind of mount. Based on my frantic googling, it seems like it's a 20mm bayonet mount... so maybe I could find something else that sort-of works?