Sigma 28-70mm f/2.8 EX DG IF Aspherical Lens for Nikon SLR Cameras

by Sigma

Product Details

• Item Weight: 1.1 pounds
• Shipping Weight: 2 pounds
• Shipping: This item is also available for shipping to select countries outside the U.S.
• ASIN: B00063KO66
• Item model number: B00063KO66
• Average Customer Review: 3.5 out of 5 stars  See all reviews (2 customer reviews)
• Date first available at Amazon.com: September 17, 2004

Product Description

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.

Product Description

EX DG Lenses are designed for digital SLR cameras as well as 35mm film 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 (special low density) elements and four aspherical lenses provide correction against distortion as well as all types of aberration, especially spherical aberration. Features: 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 33cm (13 ) at all focal lengths The inner focus system allows the lens to focus without rotating the front element, therefore a Petal-type hood and circular polarizing filters are easily used Specifications: Focal length: 28-70mm Minimum aperture: F22 Lens construction: 14 elements in 12 groups Angle of view: 75.4-34.3deg. Number of diaphragm blades: 9 pcs Overall lens length: 87.2mm (3.4 ) Maximum diameter: 74mm (2.9 ) Filter size: 67mm Lens hood: petal shape bayonet Weight: 510g (18 ozs.) Minimum focusing distance: 33cm (13 ) at all focal lengths Maximum magnification ratio: 1:4.4

Customer Reviews

Most Helpful Customer Reviews

2 of 3 people found the following review helpful:

2.0 out of 5 stars Not what I expected, December 11, 2009

By 

Alberto (Dallas, TX) - See all my reviews

Amazon Verified Purchase

This review is from: Sigma 28-70mm f/2.8 EX DG IF Aspherical Lens for Nikon SLR Cameras (Electronics)

You get for what you pay...The lens is not sharp at all, even at higher F values. To closer you get to 2.8 the most you notice vignetting in the four corners of the photo and I judge this based on the fact I use a full frame camera, might not be the same with a 1/2 frame. The lens petal hood would not align perfectly (at least on my model) and I think this is a problem because it is noticeable on my pics. I love the material and the feel of the lens but I just couldn't use it for the type of photography I do.

5.0 out of 5 stars Great lens 4 me!, April 6, 2010

By 

P. mceachin - See all my reviews
(REAL NAME)   

This review is from: Sigma 28-70mm f/2.8 EX DG IF Aspherical Lens for Nikon SLR Cameras (Electronics)

I purchased this lens when it 1st came out... and I've never looked back! It delivers sharp, clear images consistently.
100 percent of the images on my site (...) were taken with this lens. BTW, I always shoot in manual mode. I hope this helps!