Product Description

Sigma Photo introduces the Sigma 15-30mm f3.5-4.5 EX Aspherical DG DF for Nikon SLR cameras and is the first to open a new range of photographic possibilities. Using a hybrid aspherical lens in the front lens group to minimize distortion and astigmatism, and molded glass aspherical lens in the rear lens group to minimize spherical aberration, ultra-wide-angle photos appear more natural than ever. Filter size - Rear (gelatin filter insert type) - Does not use any front, screw-in filters Lens construction - 17 elements in 13 groups Maximum aperture - F3.5-4.5 Minimum aperture - F22-32 Dimensions - 3.42 Diameter x 5.12 Long Includes protective case

Product Details

• Brand: Sigma
• Model: 512-306
• Number of items: 1
• Dimensions: 3.00 pounds

Features

• Ultra wide-angle zoom lens designed for Nikon digital SLR cameras
• 15-30mm focal length
• 3.5-4.5 maximum aperture
• Super Multi Coating reduces flare and ghosting that tends to occur when using digital SLR cameras
• 17 lens elements in 13 groups; aspherical elements at front and rear lens groups

Customer Reviews

I love this lens
This lens is very sharp especially at 15mm f8-16 which is the aperture we use for landscape. It can be used on 35mm film and it will be really really wide at 15mm. It can also be used with digital camera. I used with D70 and love it. It is much sharper than sigma 12-24 if you check the mtf chart at sigma web site.
It is my favorite lens.

Crisp, sharp wide angle
I purchased this lens because I did not want to drop a grand for the Nikon 12-24mm f/4G. After reading professional reviews, I'm glad I saved my money. This lens performs almost identically to the more expensive Nikkor option, at a third the price!

I've used this lens in several very different shooting environments, including ambient light interior shots on a tripod, in harsh sunlight over snow, and for night photography. It performed exceptionally well across the gamut, producing contrasty, sharp images that were everything I could have hoped for.

The lens focus ring doesn't move during auto focus, which makes holding the lens during shooting a bit easier. Manual focus works well: smooth and precise.

A few dislikes:

As others have noted, this lens is bulky! It is over 10" long, and weighs about a pound and a half. It is not a 'walk around' lens.

You cannot use filters with the lens because of the curvature of the front element.

The flare guard is permanent. I would have preferred to be able to take it off, if for no other reason that saving space when packing the lens into my carry bag.

Save your money and get this lens over the Nikkor 12-24mm lens.

Great wide angle
Great wide-angle lens for the money. Little fall-off in corners, especially at f8 and above. I would recommend this lens to anyone who cannot afford to buy the Nikon lenses. The only complaint (?) is that the zoom ring takes a bit of effort to turn. The focus is fast and accurate, and pictures are crisp.