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Sigma AF 70 mm f/ 2.8 EX DG Macro Lens

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Sigma AF 70 mm f/ 2.8 EX DG Macro lens

Sigma AF 70 mm f/ 2.8 EX DG Macro lens

Sigma AF 70 mm f/ 2.8 EX DG Macro lens

MTF-charts

Sigma AF 70 mm f/ 2.8 EX DG Macro MTF Chart

Optical design

Sigma AF 70 mm f/ 2.8 EX DG Macro optical design

Format: 35mm SLR

Type: Prime lens

Focusing: Auto Focus (AF)

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

First year of production: 2006

Optical design: 10 elements in 9 groups (3 SLD)

Features: Macro lens
User reviews (0)

Photos (6)

Tests (0)

Owners (4)

Views (2682)

Average price: $640

Specifications:

Focal lengthMax. apertureMin. apertureBladesMin. Focus (m.)Filter Ø (mm.)Weight (gr/oz)Length (mm/in)
70mmf/2.8f/2290.25762525/18,595/3,7

Additional information:

The Sigma AF 70 mm f/ 2.8 EX DG Macro

  • Angle of view 34.3°
  • Diameter 76 mm
  • Minimum working distance 112 mm
  • The front element does not rotate
  • Micro-motor autofocus drive
  • Floating system of focusing.
  • Metal threaded hood LH620-01 included
  • No built-in motor for Nikon

The Sigma AF 70 mm F 2.8 EX DG Macro is a full format macro lens with very high resolution from a wide open aperture onwards. This lens has a plane field of the front lens and is able to take correct pictures of plane objects, both a small stamp and a big picture will be sharp from the center towards the corners. A focal length of the lens makes it possible to use an advantageous perspective for face portraits.

Three SLD (Special Low Dispersion) elements provide optimal color  rendering and sharpness throughout the entire range of focal lengths, and  the super multi-coating reduces flare and halation. It has very low distortion, characteristic of macro lenses.  The Sigma AF 70 mm f/ 2.8 EX DGMacrohas slight vignetting at f/2.8 only, but it is almost negligible on a crop.

The kit hood lens is threaded (62 mm) and not reversible, the kit cap is not mounted on it, but you can thread a 77 mm filter or a                              77 mm cap. The filter is not shaded with the hood. On installing a polarizer between the hood and the lens, the hood rotates with the filter.

The SigmaAF 70 mm f/ 2.8 EX DG Macrois equipped with an autofocus limiter which functions throughout the range of 26 to 48 cm or of 55 cm to infinity. The focus ring rotates during autofocus operations. The autofocus itself is slow and noisy.

A scale of possible magnification ratios is marked with white on the top of an extending barrel.

Owners of APS-C cameras will be interested in this lens with  the equivalent focal length of 105-112 mm.

Evaluation of Sigma designations:

  • AF for autofocus.
  • EX - high-quality line of lenses, combining reliability, convenience and excellent optical characteristics.
  • DG - full format lens optimized for DSRL cameras, as well as for film SLR cameras.
  • MACRO - macrography with the max. magnification of 1:1

Links to online resources:
PDF Files:
Posted by: dv   Date of publication: 21.10.2010



Photos taken with this lens Sigma AF 70 mm f/ 2.8 EX DG Macro:


Frog
Autor: hk12
0 0 773

Csilla
Autor: hk12
0 0 713

Thistle
Autor: hk12
0 0 841

Flowers
Autor: hk12
0 0 733

Mechanical quality4.002
Optical quality5.002
Usability4.502
Pricing / Value4.502
Bokeh5.002
Overall lens rating
4.60

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