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Sigma 50mm f/2.8 EX DG MACRO

Sigma 50mm f/2.8 EX DG MACRO lens
 

Full frame sized image

Lenses that create APS-C sized image are designed for digital only. They cannot be used on cameras that have image sensor larger than the APS-C format. These lenses are not suitable for film cameras either.

 

No Ultrasonic AF

Lenses with ultrasonic focusing mechanism tend to be quiter and faster than traditionally focusing lenses.

 

No stepping motor AF

Lenses with stepping motor focusing mechanism are better for contrast based focusing, and are quiter and faster than traditionally focusing lenses.

 

No Low Dispersion lens element is used

Low Dispersion lens elements help to reduce chromatic aberration.

 

Not stabilized

Image stabilization helps to reduce blur caused by hand shake, especially at high focal length or in low light situations. Image stabilization can give 1 to 3 stop advantage over none stabilized lens, based on the reciprocal rule.

 

Metal mount

Cheaper lenses are usually equipped with plastic mount, while more expensive, professional lenses have metal mount. In general, metal mounts are more durable, and a good thing to have when lenses are changed a lot. When a camera is used mainly with one lens, the material of the lens mount is not that important.

 

No Internal Focusing

Internally focusing lenses don't change their size while setting focus.

 

No drop-in filter support

Drop-in filters are used in those lenses where either the front lens is too large, or the field of view doesn't permit the use of traditional filters at the front of the lens. Usually bright tele and ultra-wide angle lenses support this filter type.

This standard macro lens uses a floating system and can take high-quality images from life-size shots to distant objects. Ther performance is especially sutibale for digital single-lens reflex cameras. The effects of magnification chromatic aberration, a specific problem for digital cameras, is reduced, and the correction of the various aberrations up to the periphery of the image is excellent. As a screw-type round hood is used, cirucal polaring filters can be used easily. An aperutre of F45 for greater depth of field is also provided (F32 for Nikon and Pentax).

Sigma 50mm f/2.8 EX DG MACRO Specification

Available mount(s) Canon EF, Nikon F, Pentax K, Sony / Minolta A, Sigma
Application(s) Portrait, Closeup, Landscape, Architecture
Category(s) Standard prime, Macro
Multiplier
Stabilizer no
Focal length 50 mm (prime)
Lens construction 10 elements in 9 groups
Angle of view 35mm: 46.8°
digital: 27.9°
Number of blades 7
Maximum aperture f/2.8
Minimum aperture f/45
Minimum focusing distance 18.90 cm
Magnification
Filter size 55 mm
Size ∅ 71.4 × 66.5 mm
Weight 320 g
Notes
AF speed N/A
AF sound
Internal focusing no
Internal zoom N/A
Fix front lens N/A
Mount type metal
Weather sealed N/A
Drop in filter no
Ultrasonic AF no
Stepping motor AF no
APS-C sized circle no
Low dispersion lens element no
Hard case N/A
Soft case N/A
Lens hood LH550-01
printable lens hood
Tripod adapter N/A
Discontinued yes
Sigma 50mm f/2.8 EX DG MACRO Specification

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