OMG! What a splendid lens! I call it my "bag of primes."
It is tack-sharp at any aperture, at any focal length.
It appears to be equally sharp with the EC-14 teleconverter, for an effective 141mm @ ƒ2.8.

•Yes, it is big and heavy. It is also one-of-a-kind. I fully expect a lens that is a full stop faster to be bigger and heavier.
• I don't like "focus by wire." It would have been nice if it had a clutched mechanical focus.
• Auto focus has been accurate and speedy enough for me, but a sports shooter might find it on the slow side. • Subject to flare — use the hood!

+ very sharp (right from wide-open)
+ beautiful, silky smooth bokeh
+ exceptional full-metal build
+ guaranteed weatherproof
+ AF-lock buttons, AF limiter
+ lens hood with doors, velvet inside the hood
+ 77 mm filter thread
+ fast focusing

- expensive
- big and heavy
- focusing more noisy than ultrasonic type motors

Top notch lens without any real weakness, great for portraiture, landscapes, sports and more.

Similar Products Used:

Canon 70-200/2.8L, Nikkor 70-200/2.8VR, Minolta 70-200/2.8G

* Sharp lens even on wide open aperture
* Weathersealed
* Focus Lock on Lens !
* Fast AF
* Amazing shallow DOF

* Heavy (even more than 70-200 mm f/2.8!)
* Expensive

The first zoom lens with constant f/2 aperture throughout the range.
FOV is similar to 70-200 mm with a great background blur.

Customer Service

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Similar Products Used:

- ZD 150 mm f/2
- ZD 14-54 mm f/2.8-3.5
- ZD 50-200 mm f/2.8-3.5