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Sigma DG 20-40 mm f/ 2.8 EX Aspherical Lens

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Sigma DG 20-40 mm f/ 2.8 EX Aspherical lens

Optical design

Sigma DG 20-40 mm f/ 2.8 EX Aspherical optical design

Format: 35mm SLR

Type: Zoom lens

Focusing: Auto Focus (AF)

Lens mounts: Canon EF, EF-S, Canon EF, EF-S, Canon EF, EF-S, Canon EF, EF-S, Sony A / Minolta A, Sony A / Minolta A, Sony A / Minolta A, Sony A / Minolta A, Nikon F (FX, DX), Nikon F (FX, DX), Nikon F (FX, DX), Nikon F (FX, DX), Pentax K, Pentax K, Pentax K, Pentax K, Sigma SA, Sigma SA, Sigma SA, Sigma SA

First year of production: 2001

Optical design: 17 elements in 13 groups

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Views (4460)

Average price: $480

Specifications:

Focal lengthMax. apertureMin. apertureBladesMin. Focus (m.)Filter Ø (mm.)Weight (gr/oz)Length (mm/in)
20mm - 40mmf/2.8f/2290.382595/21108/4,3

Additional information:

The Sigma AF 20-40mm F2.8 EX DG Aspherical  is a wide-angle zoom lens with constant maximum aperture for various 35 mm SLR cameras.


Posted by: strat72   Date of publication: 08.10.2012


Mechanical quality4.002
Optical quality3.502
Usability4.002
Pricing / Value4.002
Bokeh4.002
Overall lens rating
3.90

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