Hair Bow -- NEX-5 & Kodak Anastigmat 50mm f1.6 cine lens @ f1.6. Click for larger.
Tried the Kodak Anastigmat 50mm f1.6 on the NEX-5 and I was surprised to find that there is just very slight vignetting at close range wide open. Stopping down or focusing further away will vignetting quite a bit more. This lens produces very strange swirling affects at wide apertures, like the Dallmeyer Speed 1 inch f1.5 that I had. Some like this affect, but I find it annoying after a little while. My favourite feature of this lens, other than it's extremely sharp optics, is the close focusing capability, as you can see in this picture.