Comments about Sigma Sigma 15mm f/2.8 EX DG AutoFocus Diagonal Fish-Eye Lens for Nikon AF D Cameras:

I'm not a fan of the strange two-piece lens hood, or the "wings" of the built-in hood, but otherwise it's a great lens. It even works on my old FM2n!!I read a review by Thom Hogan [@] of the older version of this lens, and it won over the Nikon (which hasn't changed). That got me to try this instead of the Nikon, and I'm grad I did.

Comments about Sigma Sigma 15mm f/2.8 EX DG AutoFocus Diagonal Fish-Eye Lens for Nikon AF D Cameras:

I used this lens mostly at night and for architectural images. I'm satisfied.

Comments about Sigma Sigma 15mm f/2.8 EX DG AutoFocus Diagonal Fish-Eye Lens for Nikon AF D Cameras:

I use this lens as my low/no light lens due to its 2.8 aperture and the fact that infinity is about 10' away. This way I can set it to ~6-8' for room parties and depth will cover most focus errors. Also for you cropped sensor users you CAN use this with 67mm filters if you take a cheap UV filter and remove the glass and fit it in the build in hood, use small bits of electrical tape as a wedge and the filter ring will fit quite snug. The thickness of the filter ring will move any filter far enough to not make contact with the lens itself. As long as the UV filter was stackable you now have filter threads. I did this for IR (which this lens can do quite nicely) and for Grad ND filters.

Comments about Sigma Sigma 15mm f/2.8 EX DG AutoFocus Diagonal Fish-Eye Lens for Nikon AF D Cameras:

definitely met expectations. what a difference between cheapo entry-level sigma and EX series. nicely finished, even rugged, yet still light and small. [...]at $[...], not so much of a value--consider the tokina 10-17 instead, which gives you zoom, but is probably not as sharp. 2.8 aperture is nice and fast, and 15mm is plenty wide for most situations except dedicated landscape photography -- consider tokina 12-24 or nikon 10.5 fisheye instead. here's a neat trick: w/lens hood on, rounds off corners for added effect. fisheye isn't as pronounced as one might think (maybe due to 1.5 mag factor on dslr), which means you can use this as a wide angle lens. overall it's a very fun lens to use. recommended for live action shooters who need a fast, high-performance piece of glass for indoor and low-light situations.