Sigma 17-70mm f2.8-4.5 DC HSM - NIKON
Sigma 17-70mm f2.8-4.5 DC HSM - NIKON<br><br>The Sigma 17-70mm F2.8-4.5 DC Macro HSM features a large-aperture, standard zoom lens for digital cameras with an open-aperture value of F2.8 (at 17mm) and covers the most frequently used focal lengths. <br><br>
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Overview / Product Description
The Sigma 17-70mm F2.8-4.5 DC Macro HSM features a large-aperture, standard zoom lens for digital cameras with an open-aperture value of F2.8 (at 17mm) and covers the most frequently used focal lengths.
With an aperture fast enough to be used in many light situations, it is close focusing for use with very small object and its outstanding optical performance that make this an ideal all-around lens for landscapes, portraits, still life studies, group shots and just about any everyday photo situation. With a faster aperture than the typical camera kit lens it is an excellent choice for the photographer who has higher expectations for their photo equipment.
Designed exclusively for use with smaller chip APS-c or 4/3 cameras
Close focusing down to only 8 inch away for a 1:2.3 magnification which is approximately _ life size
HSM (Hyper-Sonic Motor) ensures a quiet & high-speed auto focus
SLD (Special Low Dispersion) glass provide optimum color correction & sharpness
Two aspherical lens elements provide critical sharpness & low distortion
A Super Multi-Coating is used to reduce the occurrence of flare & ghosting and delivers high performance across the entire focusing range
Lens Construction: 15 Elements in 12 Groups
Angle of View: 79.7 degrees - 22.9 degrees
Number of Diaphragm Blades: 7
Miminum Aperture: f22
Minimum Focusing Distance: 20 cm / 7.9 in
Filter Size (mm:) 72
Dimensions (Diameter x Length): 79x82.5 mm/3.1x3.2 in
Extended Dimensions: 123 mm / 4.8 in
Weight 490g / 17.3oz.
Corresponding Mounts: Nikon