Sigma 18-50mm F2.8 DC DN Contemporary

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Lens Specifications
Name Sigma 18-50mm F2.8 DC DN Contemporary
Image Circle APS-C
Type Standard Zoom
Focal Length 18 - 50mm
APS Equivalent 27 - 75mm
Max Aperture f/2.8
Min Aperture f/22
Diaphragm Blades 7 (rounded)
Lens Construction 13 elements in 10 groups, including three aspherical elements and one Special Low Dispersion (SLD) lens
Diagonal Angle of View(Based on image circle) 76.5 to 31.7 degrees
Focus Details Internal focusing system using stepping motor
Front Element Rotation No
Zoom System Rotary
Closest Focus 12.1 (W) - 30 (T) cm / 4.8 (W) - 11.9 (T) in.
Magnification Ratio 1:2.8 (W) - 1:5 (T)
Filter Size 55mm
Dimensions(Length x Diameter) 74.5mm x 65.4mm / 2.9 in. x 2.6 in.
Weight 290g / 10.2 oz
Notes Available AF Mounts: L-mount, E-mount
Typical Online Price US$549