TECHNOLOGY UPDATE :

Sigma 20-40 mm F2.8 EX DG


Specification

ModelSIGMA 20-40 mm F2.8 EX DG ASPHERICAL
Focal Length20-40mm.
35mm equivalent focal length 105- 300mm.
Maximum ApertureF/2.8
Minimum ApertureF/22
Image stabilisationNo
Diaphragm Blade Number9,rounded
AF Motor Type  
Filter thread82mm
Lens Construction17 elements in 13 groups
Angle of View (diagonal)94.5°-56.8°
Minimum Focus Distance0.3m
Maximum Reproduction Ratio1 : 4.6
Zoom method 
Standard Accessory

Front and rear caps

Compatible MountCanon, Nikon (D Type), Sigma, Pentax, Minolta (D)
Diameter89 x 107.8mm
Weight600g
PriceUS: $
Bth: 23,900
Year introduced 

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