Practically replaces the 25mm prime lens while offering more versatility without any discernible loss in image quality. The lens is large, heavier than most, has stabilization and wonderful lens coatings that offer an inherent circular polarizer benefit of sorts.

The Surface: I have long been a skeptic of using zooms over prime lenses almost entirely due to the fact that I have found better image quality in the latter 9.9/10 times while shooting.

First off, this thing is big and heavy. It is as big as a 70-200 f2.8 and not for the weight weenies. Used hand held on a 645z body, it is big and heavy (7lbs) However it balances surprisingly well and with the help of SR delivers sharp images.

I love it...It worked as SPECIFIED...

Replaces the 25mm prime lens while offering more versatility without any practical loss in image quality. The lens is large, heavier than most, has stabilization and wonderful lens coatings that offer a sort off circular polarizer benefit.

I was using the 645z with this lens in Italy to photograph the interior of various basilicas. The weight caused me no end of difficulty shooting at lower iso. Even with the SR on, I found many out of focus shots.

We bought this lens to use for interiors, landscapes and the like. Results from this lens, despite its enormous size are mediocre to okay. Distortion and focus fall are bearable but for this sort of money, just not good enough. Some of 20 year old glass for 1/10th the price overshadows this lens.

Very useful all round wide lens, with very little distortion. Yes, its a big lens but it balances well on the camera. I use it mostly handheld and have been happy. The shake reduction really works and I am confident hand-holding this lens at slow shutter speeds.

Fantastic lens. This lens, combined with a 645z, is truly remarkable. I can see it serving well for capturing landscapes, but I use it for documentary. In low light, with the shake reduction enabled, I'm able to hand hold down to an 1/8th of a second at 6400 ISO and still have a print-worthy frame.