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Sigma 28-70mm f/2.8 AF EX DG

Photos - Camera Lens Sigma 28-70mm f/2.8 AF EX DG
Outdated Product
$597.00
Mount: Canon EF; Nikon F; Pentax K; Sigma SA; Sony A; Focal length (mm): 28 - 70; Aperture value: f/2.8; Diaphragm, min: 22; Minimum focus distance (m): 0.33; Sensor size: full frame/APS-C; Autofocus drive: is absent; AF drive (screw driven); Internal focus; Filter diameter (mm): 67; Dimensions (diameter/length) (mm): 74x87.2
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Sigma 28-70mm f/2.8 AF EX DG
System
Canon
Nikon
Minolta
Pentax
Sigma
Sony
Mount
Canon EF
Nikon F
Pentax K
Sigma SA
Sony A
Focal length
28 - 70 mm
Aperture value
f/2.8
Viewing angles
75.4° - 34.3°
Min. diaphragm
22
Minimum focus distance
0.33 m
Maximum zoom
0.23
Sensor size
full frame/APS-C
Autofocus drive
is absent
AF drive (screw driven)
Internal focus
Design (elements/groups)
14 elements in 12 groups
Number of diaphragm blades
9
Filter diameter
67 mm
Dimensions (diameter/length)
74x87.2 mm
Weight
510 g
Added to E-Catalog
november 2006
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Short description:

Compact, fast lens optimized for use with digital cameras. Regardless of the focal length, the lens provides a constant aperture of F2.8, the minimum focus distance is also unchanged and is 33 cm at any focal length, which gives an increase of up to 1:4.4. Thanks to the use of two elements of low dispersion glass (SLD, Special Low Dispersion) and four aspherical lenses in the optical scheme, the lens guarantees excellent correction of distortion and all types of aberrations. When focus, the front lens group does not rotate, which allows the use of circular polarizing filters and a petal hood, which effectively eliminates stray light.