Sigma 17-70mm f/2.8-4.5 DC Macro

Lens Reviews / Sigma Lenses i Lab tested
Lens Specifications
Name Sigma 17-70mm f/2.8-4.5 DC Macro
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 f/2.8 - 4.5
Min Aperture f/22
Diaphragm Blades 7
Lens Construction 15 elements in 12 groups, including 1 SLD and 2 aspherical elements
Diagonal Angle of View(Based on image circle) 72.4 to 20.2 degrees
Focus Details Internal
Front Element Rotation No
Zoom System Rotary with lock
Closest Focus 20cm / 7.9 in.(Much closer? See Test Notes.)
Magnification Ratio 0.43x / 1:2.3
Filter Size 72mm
Dimensions(Length x Diameter) 82.5mm x 79mm / 3.2 in. x 3.1 in.
Weight 455g / 16 oz
Notes Available AF Mounts: Sigma, Canon, Nikon, Minolta, Pentax
Typical Online Price US$390