Sigma 70-200mm F2.8 APO EX HSM | $589.95 | | |
echanism keeps the manual focus ring from spinning when the camera is autofocusing.
This new lens features apochromatic optical design and four elements composed of Special Low Dispersion (SLD) glass for high image contrast, resolution and color saturat
ion.
The front barrel does not rotate during focusing, due to internal focusing system.
Internal zooming mechanism allows the lens length to remain constant during zooming.
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