Sigma AF 50 mm f/ 2.8 EX DG Macro Lens

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MTF-charts

Sigma AF 50 mm f/ 2.8 EX DG Macro MTF Chart

Optical design

Format: 35mm SLR

Type: Prime lens

Focusing: Auto Focus (AF)

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

First year of production: 2004

Optical design: 10 elements in 9 groups

Features: Macro lens

User reviews (1)

Photos (2)

Tests (0)

Owners (4)

Views (7355)

Average price: $240

Specifications:

Focal length	Max. aperture	Min. aperture	Blades	Min. Focus (m.)	Filter Ø (mm.)	Weight (gr/oz)	Length (mm/in)
50mm	f/2.8	f/45	7	0.188	55	320/11,3	66/2,6

Additional information:

The Sigma AF 50 mm f/ 2.8 EX DG Macro

Max. magnification 1:1
Angle of view 46.8°
Diameter 71.4 mm
Max. focal length 101.5 mm
Minimum working distance 44 mm
Minimum aperture for Nikon and Pentaх f/32
The front element does not rotate
Distance information transmission (only Nikon)
No built-in motor for Nikon
Hood LH550-02 included

The Sigma AF 50 mm F2.8 EX DG Macro is a full format standard macro lens for digital and film cameras with a floating system of focusing. The lens ensures a normal perspective, and high-quality vista shots and macrography.

The kit hood of the Sigma AF 50 mm f/ 2.8 EX DG Macrois threaded, and not reversible. The use of a polarizer between a hood and a filter is possible.

The SigmaAF 50 mm f/ 2.8 EX DG Macro is equipped with a focus limiter to avoid autofocusing throughout the macro range when using the lens at conventional focus distances.

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:

Posted by: dv Date of publication: 22.10.2010

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Autor: Klaus Bo

836

Mechanical quality	2.00	2
Optical quality	5.00	2
Usability	2.50	2
Pricing / Value	3.50	2
Bokeh	4.50	2
Overall lens rating	3.50

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Owner reviews: Sigma AF 50 mm f/ 2.8 EX DG Macro

NerveNet 14.11.2025 22:09:54

Period of use: 1 year

Strengths:

Inexpensive today. Sharp. Lightweight. Real 1:1 macro. Max aperture of f/2.8. Autofocus available.

Weaknesses:

On Nikon F mount camera it uses the screwdriver motor to move the focusing group, slow and noisy.

The manual focus-throw is too short near infinity.

Made of plastic, feels cheap in the old Sigma way.

Comments:

A nice cheap 50mm f/2.8 with 1:1 macro capabable.

The only downsides for me is the short focus throw near infinity.

About handling I prefer Canon's 50mm f/2.5 compact macro with its 1:2 ratio or Pentax SMC 35mm f/2.8 Macro Limited (for Pentax APS-C cameras).

Regarding macro, this 50mm is nice to use but some times the working distance will be short interfering the light, a 100mm macro will do a better job.

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