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Sigma 20-40 mm f/2.8 EX DG Aspherical

Pictures:
Specifications:
Manufacturer Sigma
Model 20-40 mm f/2.8 EX DG Aspherical
Lens style Wide angle zoom
Focal length 20 - 40 mm
Maximum aperture f/2.8
Angle of view 94.5 - 56.8 o
Closest focusing distance 0.3 m
Maximum magnification 1:4.6
Minimum aperture 32
Number of diaphragm blades 9
Auto focus type AF
Lens Construction 17 elements / 13 groups
Filter diameter 82 mm
Macro No
Available mounts Canon EF
Nikon F
Sony A / Minolta
Sigma
Pentax K
Dimensions 89 x 107.5 mm
Weight 595 g
Additional information
Average rating (1 owners reviews)
Build quality
Optical quality
Value for money

Overall

4.33 Good
Owners reviews (1)
  1. lensreporter
    lensreporter 23 November 2010, 19:28
    Build quality
    Optical quality
    Value for money

    Overall

    IP 80.174.x.x
    Owner since: 2 years
    Price: 450
    User profile: Semipro

    Cons: Its a big lens! May be too big, but nice constructed. Cornershading on fullframe.

    Pros: Optically one of the best lenses in the Sigmaprogramm. Very few distortion, very few cornershading APS-C, beautifull colores, sharp from f4, not much CAs.

    Summary: A nearly onknown lens, thats a pitty. One of the very best Sigmalenses, good construction but a bit big. Sharp and great colours, resistent to flare and CAs.

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