Average Reviews:
(More customer reviews)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.
Click Here to see more reviews about: Sigma 170-500mm f/5-6.3 APO Aspherical Lens for Canon SLR Cameras
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.
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