Sigma 28mm f/1.8 EX DG Aspherical Macro

Lens Reviews / Sigma Lenses i Lab tested
Lens Specifications
Name Sigma 28mm ƒ/1.8 EX DG Aspherical Macro
Image Circle 35mm
Type Wide Prime
Focal Length 28mm
APS Equivalent 1.5x: 42mm; 1.6x: 44.8mm
Max Aperture ƒ/1.8
Min Aperture ƒ/22
Diaphragm Blades 9
Lens Construction 10 elements in 9 groups, including 2 aspherical elements
Diagonal Angle of View(Based on image circle) 75.4 degrees
Focus Details Internal with Dual Focus mechanism
Front Element Rotation No
Zoom System n/a
Closest Focus 20cm / 7.9 in.
Magnification Ratio 0.34x / 1:2.9
Filter Size 77mm
Dimensions(Length x Diameter) 82.5mm x 83.6mm / 3.2 in. x 3.3 in.
Weight 500g / 17.6 oz
Notes Available AF Mounts: Sigma, Canon, Nikon, Minolta, Pentax
Typical Online Price US$269.99