I had to go to Tempe Camera the other day and while I was there I found out they are now renting Zeiss lenses for Canon and Nikon. I don't see Zeiss lenses listed on their rental website yet, but I was told they rent for $65 a day. (Their Canon L lenses rent for about $45 a day - depending on the lens.)
I started reading about Zeiss lenses a couple years ago, and have been so curious about them ever since. I've always wanted to buy more Canon lenses, but after reading reviews of Zeiss lenses, I think that I would want to buy a Zeiss lens instead.
The reviews that I read can't seem to say enough good things about Zeiss's 100mm f/2 and 35mm f/2 . The reviews say that the color is amazingly saturated and that it's amazingly sharp wide open. The one thing the reviewers didn't seem to like was the vignetting when the lens was wide open. But they loved the 3-D effect and said they didn't mind that there wasn't auto-focus. (Zeiss lenses are all manual focus.)
All of these in-love reviews remind me of the reviews I have read for Canon's 135 mm f/2 lens, which I have rented and want to own. I would agree - everything about the 135mm f/2 is pretty much perfect.
So that's my super short post for today -> I want a Zeiss lens. And before that, I want to rent the 35mm f/2 from Tempe Camera.
Here is an image I found on Flickr taken with the Zeiss Distagon 35mm f/2, by this Flickr user, Xavibarca: http://www.flickr.com/photos/xavibarca/