| 词条 | Sigma 70-200mm f/2.8 EX DG OS HSM lens | |||||||||||||||||||||||||||||||||
| 释义 |
The Sigma's APO 70-200mm F2.8 EX DG OS HSM was announced in 2010, is an EX Lens meaning its in Sigma's high-end line up of lenses Up to 4-stops of correction OS (Optical Stabilizer) help reduce blurring associated with hand held motion at low shutter speeds. Features a HSM AF motor for silent auto-focus and a constant maximum aperture of f/2.8 throughout the zoom range . Key featuresSigma has added OS, This is their own anti-shake system Two FLD glass elements and three SLD glass elements for Chromatic aberration. 9 blade diaphragm for background blur effect, Fast aperture of f2.8 throughout the entire zoom range makes it very good for low light, A minimum focusing distance of 55.1 inches and Weight is 1430g / 50.4oz. The Sigma 70-200mm f2.8 EX DG OS HSM is a professional telephoto zoom lens made by [https://www.sigmaphoto.com/lenses Sigma]. The optical quality of this lens is superb thanks to 22 elements in 17 groups and a maximum aperture of f2.8. This lens is an excellent value when compared to the equivalent Nikon or Canon counterpart coming in at about 1/3 cheaper than the name brand offerings.[1] Specifications
See also
References1. ^http://chriswatkinsphoto.com/sigma-70-200mm-ex-dg-apo-macro-hsm-ii-lens-review/
1 : Sigma lenses |
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