I have posted a lengthly review of the Zeiss 135MM lens on my blog. There are a number of field test images for you to view and my overall impressions of the lens. Here is a section from the review, if you find it interesting go to: www.foto-gizmo.blogspot.com
"At a bit over $2,100 this manual focus lens is about twice the price of the Canon 135 F2 L, which is an AF lens. I have a number of L lenses from Canon. In general, they are quite competent, have fine resolution and color rendering. As I only review gear I buy for myself and I do not have the Canon 135, I cannot do a head to head comparison. But, with over 50 years of shooting under my ever expanding belt, I can tell you that this lens is in a class by itself, just as the Leitz glass I used with the last film SLR I owned, the Leica R8, as well as the digital M9 and now the S2.
I took the 135 ZE and mounted it on the Canon 5D Mk III. The balance was very nice in hand. The first thing I noted is the thickness of the lens - nice for my big mitts, it uses 77MM filters. The second thing, somewhat a surprise, is that the lens does not employ internal focusing, the lens does extend as you get closer to your subject and the focus ring moves with it. The Zeiss lens focuses to just over 2 1/2 feet vs. the Canon 135MM F2 L at 3 feet. That is 1:4 ratio for the Zeiss and a 1:5 ratio for the Canon, a nice bonus.



