"I mainly use this lens for close-up work like insects and plants. It is ideal for a full frame high resolution sensor and is sharp from edge to edge. I can't find any faults at this stage." bhphotovideo.com
"I've used it for Portraits and for Macro and it did a beautiful job in both areas. Nice rich colors on my 5D & 7D. This lens made me fall in love with my 7D because I was disappointed with the 7D performance. Shooting macro with the 7D and Tokina 100mm macro was as easy as turning on the camera. I love this lens." bhphotovideo.com
"The best lens I've ever used. It's optical performance is overwhelming - aberrations are extremely well corrected, extremely sharp across the frame at all apertures with no distortion whatsoever." bhphotovideo.com
"The Zeiss lens is light, compact, extremely well-built and renders incredibly crisp, contrasty images. The mechanics of this lens are a delight to experience...in short, an incomparable lens!" bhphotovideo.com