Product Description

This compact, large and constant F2.8 aperture zoom lens and is ideal for digital SLR cameras. Two SLD elements and four aspherical lenses provide the ultimate correction against distortion as well as all types of aberration, especially spherical aberration. Its advanced optical design ensures high performance throughout the entire zoom range.The use of aspherical lenses in the construction of this lens not only corrects aberrations but also produces a very small and lightweight lens design. Its compact, yet robust, construction has an overall length of 87.2mm (3.4in.), maximum diameter of 74mm (2.9in.), filter size of diameter 67mm and weight of 510g(18.0 ounces).

Product Details

• Brand: Sigma
• Model: B00063KO66
• Dimensions: 1.12 pounds

Features

• Zoom lens with Nikon-D AF mount
• Special low-dispersion glass for high image quality
• 28 to 70 mm focal length
• f2.8 maximum aperture
• Inner focusing system allows add-on hoods and filters

From the Manufacturer
World’s smallest, lightweight, yet robust, large aperture zoom lens

• EX DG Lens Series; Designed to give an excellent performance with Digital SLR Cameras as well as 35mm Film Cameras.
• Super Multi Layer (SML) coating reduces ghost and flare.
• Two pieces of Special Low Dispersion (SLD) elements and four aspherical lenses provide high quality images throughout the entire zoom range.
• Minimum focusing distance of 13 inches (33 centimeters) at all focal lengths.

This is the world’s smallest, large and constant aperture zoom lens and is ideal for digital SLR cameras. The power layout of the lens is specially optimized for digital SLR cameras, and Super Multi Coating gives superb color performance whilst cutting down flare and ghost.

Two SLD elements and four aspherical lenses provide the ultimate correction against distortion as well as all types of aberration, especially spherical aberration. Its advanced optical design ensures high performance throughout the entire zoom range.

The use of aspherical lenses in the construction of this lens not only corrects aberrations but also produces a very small and lightweight lens design. Its compact, yet robust, construction has an overall length of 87.2 millimeters (3.4 inches), maximum diameter of 74 millimeters (2.9 inches), filter size of 67 millimeters and weight of 510 grams (18 ounces). It has a minimum focusing distance of 33 centimeters (13 inches) at all focal lengths and a maximum magnification ratio of 1:4.4 which is very convenient for close-up photography.

The inner focus system allows the lens to be focused without rotating the front element, therefore a Petal-type hood and circular polarizing filters can easily be used.

Customer Reviews

Horrible AF with most cameras
I've tried two copies of this lens. I've used it on D300, D200, D90, D60. It focuses best for me on the D90 but is still pretty soft. I haven't been able to get acceptable results with auto focus using the D200 at all. Even manually focusing this lens is still not sharp at any aperture. Not just soft for a cheap lens, better pictures can be taken with a kit 18-55 all day with AF. The bodies I tried it with don't have focusing problems with any other lenses. Definitely not a keeper.

I tried it at an outside wedding first. Thankfully I was shooting two bodies and made sure I got all I needed with the other camera. I got maybe 5-10 usable shots for the entire day with this lens. I tried it in low light at a concert where it didn't fare any better even manually focusing(of course). Even with the low price tag, its just not worth it. I can take better pictures with most any point and shoot.