Sigma 17-70/2.8-4.5 DC Macro is an AF zoom lens exclusively designed for digital SLR cameras covering wide angle to medium telephoto.
This Sigma 17-70 DC is in Canon AF mount, equivalent to Canon EF-S, for Canon EOS digital SLRs, including Canon EOS Rebel XT, Canon EOS 5d and Canon EOS 20d.
The new multi layer lens coating and lens design reduce flare and ghosting.
Aspherical and SLD lenses, offer excellent correction for various aberrations.
The Sigma 17-70 DC lens offers a large, fast aperture of F2.8 at wide angle.
Performs superbly even in relatively low light conditions indoors or at dusk.
Inner focusing system ensures fast AF speed and prevents front of lens from rotating, for easy use with circular polarizing filters and lens hoods.
Sigma 17-70 DC macro lens is also equipped with Zoom Lock Switch that eliminates Zoom Creep during transportation.
Lens Construction: 15 Elements in 12 Groups.
Angle of View 72.4 - 20.2 degrees.
Number of Diaphragm Blades 7 Blades.
Minimum Aperture F22.
Minimum Focusing Distance 20cm/7.9 in.
Maximum Magnification 1:3.
Filter thread size 72mm.
Lens Dimensions: Diameter 79mm X Length 82.5mm; 3.1 in. X 3.2 in.
Sigma 17-70 DC macro lens weighs 455g/16.0 oz.
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