Is this a Sony mount?
Is this a Sony mount? I bought this used Opteka 6.5mm f/3.5 Aspherical Fisheye CS online. The ad said it was a Canon EF mount, but it clearly isn't. I took it to my local camera shop and they thought it might be a Sony Mount, but they didn't have a camera to try it on. They did try it on one Nikon, and it didn't fit, but I didn't get to see the which model they used....