Sigma 17-50mm f/2.8 EX DC OS HSM

Lens Reviews / Sigma Lenses i Lab tested
Lens Specifications
Name Sigma 17-50mm ƒ/2.8 EX DC OS HSM
Image Circle APS-C
Type Standard Zoom
Focal Length 17 - 50mm
APS Equivalent 1.5x: 26 - 75mm; 1.6x: 27 - 80mm
Max Aperture ƒ/2.8
Min Aperture ƒ/22
Diaphragm Blades 7 (rounded)
Lens Construction 17 elements in 13 groups, including 2 FLD glass elements
Diagonal Angle of View(Based on image circle) 72.4 to 27.9 degrees
Focus Details Internal, with Hyper-Sonic Motor; AF/MF switch
Front Element Rotation No
Zoom System Rotary with lock
Closest Focus 28cm / 11 in.
Magnification Ratio 0.2x / 1:5
Filter Size 77mm
Dimensions(Length x Diameter) 91.8mm x 83.5mm / 3.6 in. x 3.3 in.
Weight 565g / 19.9 oz
Notes Image Stabilized (except for Pentax and Sony mounts). Available AF Mounts: Canon, Nikon, Pentax, Sigma, Sony. Included Accessories: Case, Petal-type Hood.
Typical Online Price US$700