Is this the umc version? The picture shows umc, but nothing in the description says it's the new version.
Other than the brand name differences, are there also version differences? I.e., a new version and an old version? If so, what is the difference between new and old? Thanks in advance.
There are, in fact, two differente version. The first one was only produce for a very short period of time and discountinued because of it's lack of performance, mostly in term of sharpness and flare control. Afterward, the new version, with UMC and better optic, replace the old one. I really don't see why B&H would sell a old version of a lens that stoped being produces years ago and was only produce for a short period of time. The easiest way to know if it is the new one is just to check it is written UMC on the lens body.
6D, 550D; Samyang 14mm f/2.8, Zuiko 28mm f/3.5, Samyang 35mm f/1.4, Zuiko 50mm f/1.8, Sears 55mm f/1.4, Helios 44-2 58mm f/2, Canon 85mm f/1.8, Carl Zeiss Jena 135mm f/3.5, Kenko Extension Tubes.