Product Description

This compact aporchromatic ultra telephoto zoom lens covers the range up to 500mm and it is ideal for taking sport, nature and landcape photographs.This lens uses one aspherical lens and three SLD glasses for excellent correction of chromatic aberration. Color aberration in the secondary spectrum is compensated by using three pieces of Special Low-Dispersion glass (SLD), and making high-quality images a reality throughout the entire zoom range.The five-group zoom and rear focus systems ensure high performance stability and ease of use.A removable tripod collar is included as a standard component.

Product Details

• Brand: Sigma
• Model: 733-101

Features

• Focal length of 170-500mm
• Lens Constructed of 13 elements in 11 groups
• Lens element to deliver sharp high contrast images throughout the entire zoom range
• Aberrations usually found in ultra-telephoto lenses have been eliminated
• Built-in rotary tripod mount eliminates vibration during shutter release

Amazon.com Product Description
Sigma combined a five-lens group zoom system with an aspherical lens element when they designed the 170-500mm f5-f6.3 APO aspherical lens. This combination gives your images sharp high-contrast images throughout the entire zoom range. Its unique apochromatic lens design and three SLD glass elements help eliminate the vibrations usually found in ultra-telephoto lenses. Since the front lens group doesn't rotate, polarized filters are extremely easy to use. This lens also has a built-in rotary tripod mount to help keep the lens steady, reducing vibration during shutter release and keeping your images sharp and clear. This model is dedicated to Canon AF SLR cameras.

From the Manufacturer
This great lens combines a 5 lens group zoom system with an aspherical lens element to deliver sharp high contrast images throughout the entire zoom range. Using Sigma's unique apochromatic lens design and three SLD glass elements, the aberrations usually found in ultra-telephoto lenses have been eliminated. And with Sigma's new focusing system, the front lens group doesn't rotate, which makes using polarized filters a snap. A convenient built-in rotary tripod mount eliminates vibration during shutter release.

Corresponding AF Mount:

• Sigma, Canon, Minolta, Nikon(D) and Pentax

Customer Reviews

reasonably priced, sharp and clear
This is a moderately priced alternative telephoto lens. Althought quite bulky, lens are not heavy, and they fit perfectly well in my LowePro Min-Trekker backpack.

Lens are not fast enought to take pictures without a tripod in less then bright light conditions, however, if you can afford a longer exposure times and tripod, you can get good results. Not suited for sports or fast animal photography, but if you want zoom into the landscape, architecture or people, here is a perfectly fine lens...There is really no good alternative lens if you need a range of 170-500 mm.

Good lens but a few problems
Received lens as a gift, was thinking of buying myself. Was impressed with the looks of this monster,looks very expensive to unfamiliar folks. I use this lens on my Canon Elan 7e and from the start had a problem that I wasnt informed of when bought by friend. Problem was that certain Sigma lenses don't work properly with the new Canon camera. After some research, i found I had to ship my lens to New York Sigma factory for a free upgrade, A+. received lens in a few weeks and problem was solved. Other problem was the tripod collar is in bad spot for use with some Bogan tripod heads. the head must be used sidewards to be used with the lens. Not a big problem but a problem. Next problem is that when carrying camera with lens attached and pointing downward, the lens slides to the fully extended position and could get damaged by banging into things when not noticed right away. Other than that I like the lens. Its definitely not a pro lens but it will serve the advanced amateur well.

Top rated Lens
One of the best on the market. Even using a 2x adapter to get 1000mm. It is big and not too heavy and has a tripod collar ring for added stability.