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The Sigma APO 150-600mm F5-6.3 DG OS HSM lens is a super-telephoto lens produced by Sigma Corporation . It is actually a range of two slightly different lenses based on a common design: the Sports and Contemporary. Both lenses feature similar specifications, but there are some notable differences. The Sports model has better weather sealing ...
The Sigma APO 150-500mm F5-6.3 DG OS HSM lens is a super-telephoto lens produced by Sigma Corporation. It contains three SLD (Special Low Dispersion) glass elements to provide correction for chromatic aberration. It is aimed toward advanced consumer level photographers, and is available in Nikon, Canon, Pentax and Sigma camera mounts.
Apochromat. Chromatic aberration of a single lens causes different wavelengths of light to have differing focal lengths. An apochromat, or apochromatic lens ( apo ), is a photographic or other lens that has better correction of chromatic and spherical aberration than the much more common achromat lenses. The prefix apo- comes from the Greek ...
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The Sigma 50-500mm f / 4-6.3 EX DG HSM is a super-telephoto zoom lens produced by Sigma Corporation.It is commonly known as the "Bigma" because of its long and heavy body.It contains four SLD (Special Low Dispersion) glass elements to provide correction for chromatic aberration.
On 14 February 2005, the DG variants of several Sigma lenses have been announced, including an updated version of the 300-800mm lens, now named 300-800mm F5.6 EX DG APO HSM (manufacturer code 595). The new lens has a better coating designed to reduce flare from digital SLRs sensors. Since 29 April 2005, the lens was available for customers ...