Sigma 17-35mm f/2.8-4 EX DG Aspherical HSM

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Lens Specifications
Name Sigma 17-35mm f/2.8-4 EX DG Aspherical HSM
Image Circle 35mm
Type Wide Zoom
Focal Length 17 - 35mm
APS Equivalent 1.5x: 25.5 - 52.5mm; 1.6x: 27.2 - 56mm
Max Aperture f/2.8 - 4
Min Aperture f/22
Diaphragm Blades 8
Lens Construction 16 elements in 13 groups, including 2 aspherical and 1 SLD elements
Diagonal Angle of View(Based on image circle) 103.7 to 63.4 degrees
Focus Details Internal Focus; HSM with full-time manual override
Front Element Rotation No
Zoom System Rotary
Closest Focus 27cm / 10.6 in.
Magnification Ratio 0.22x / 1:4.5
Filter Size 77mm
Dimensions(Length x Diameter) 88.7mm x 83.5mm / 3.4 in. x 3.3 in.
Weight 560g / 19.8 oz
Notes Available AF Mounts: [HSM version]: Sigma, Canon, Nikon; [w/o HSM]: Minolta, Pentax
Typical Online Price US$449.99