Sigma 180mm f/2.8 EX DG OS HSM APO Macro

Lens Reviews / Sigma Lenses i Lab tested
Lens Specifications
Name Sigma 180mm ƒ/2.8 EX DG OS HSM APO Macro
Image Circle 35mm
Type Telephoto Prime Macro
Focal Length 180mm
APS Equivalent 1.5x: 270mm; 1.6x: 288mm
Max Aperture ƒ/2.8
Min Aperture ƒ/22
Diaphragm Blades 9 (rounded)
Lens Construction 19 elements in 14 groups, including 3 FLD ("F" Low Dispersion) glass elements
Diagonal Angle of View(Based on image circle) 13.7 degrees
Focus Details Internal with focus limiter; HSM with full-time manual focus override
Front Element Rotation No
Zoom System n/a
Closest Focus 47cm / 18.5 in.
Magnification Ratio 1.0x / 1:1
Filter Size 86mm
Dimensions(Length x Diameter) 203.9mm x 95mm / 8.0 in. x 3.7 in.
Weight 1,640g / 57.8 oz
Notes Optical Stabilizer (OS) technology offers shutter speeds approximately four stops slower than would otherwise be possible. AF mounts: Canon, Nikon, Sigma, Sony.
Typical Online Price US$1,700 (Available late July 2012)