Sigma 17-70mm f/2.8-4 DC Macro OS HSM

Lens Reviews / Sigma Lenses i Lab tested
Lens Specifications
Name Sigma 17-70mm ƒ/2.8-4 DC Macro OS HSM
Image Circle APS-C
Type Standard Zoom
Focal Length 17 - 70mm
APS Equivalent 1.5x: 25.5 - 105mm; 1.6x: 27.2 - 112mm
Max Aperture ƒ/2.8 - 4
Min Aperture ƒ/22
Diaphragm Blades 7 (rounded)
Lens Construction 17 elements in 13 groups, including 1 ELD and 3 aspherical elements
Diagonal Angle of View(Based on image circle) 72.4 to 20.2 degrees
Focus Details Internal, with Hyper-Sonic Motor; AF/MF switch
Front Element Rotation No
Zoom System Rotary with lock
Closest Focus 22cm / 8.7 in.
Magnification Ratio 0.37x / 1:2.7
Filter Size 72mm
Dimensions(Length x Diameter) 88.9mm x 79mm / 3.5 in. x 3.1 in.
Weight 535g / 18.9 oz
Notes Image Stabilized. Available AF Mounts: Canon, Nikon, Pentax, Sigma, Sony
Typical Online Price US$680