Sigma 50mm F2.8 EX DG Macro Lens for Pentax
Floating Focusing System, 18.9cm closest focusing distance, 1:1 reproduction ratio, 55mm filter size
NIVO#: 28968Mnf.#: 346454
Warranty: 1 year
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R 4,389.00
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Overview & Features top

Sigma 50mm F2.8 EX DG Macro Lens

  • Designed for use with full frame digital SLR cameras. May also be used with smaller APS-c size sensors with a corresponding effective increase in focal length to about 85mm with most cameras
  • Smallest & most affordable lens in Sigma’s macro line. Focuses down to 1:1 magnification ratio at its closes working distance of 7.4 inches
  • Super Multi-layer coating reduces flare & ghosting
  • Floating internal focus system enables a minimum shooting distance of 7.4 inches enabling ability to shoot with critical sharpness regardless of distance
  • Extremely compact weighing only 11 ounces & measures only 2.6 inches long.
  • A lens hood and front & rear lens caps are included with the lens.
This Sigma Macro 50mm F2.8 EX DG is a standard macro lens that is ideal for shooting the “small world’ around us that exists virtually unseen. A macro lens is one which will focus on a subject close enough to render it “life-size” on the image plane in your camera. It also has a “flat” field” front lens element so that it can shoot images of flat objects such as artwork or postage stamps and be tack sharp all the way across the image. So don’t miss the tiny insects, flowers of the world or the details in a stamp or coin collection or a piece of embroidery all of which are seldom noticed but offer a fascinating world if you look closely enough. Capture them with the Sigma Macro 50mm F2.8 EX DG.

Features

Macro lenses require a high imaging performance for photographing objects with digital SLR cameras

The new advanced lens design corrects various aberrations. This macro lens is specially coated to get the best color balance whilst cutting down ghost caused by reflections from the digital image sensor. This lens provides the utmost correction against lateral chromatic aberration which is a serious problem for digital SLR cameras.

Floating Focusing System

Floating Focusing system that enables this lens to photograph objects precisely in entire focusing range.

Standard 50mm lens for digital SLR cameras

This standard macro lens enables you to enjoy the communication with subject. When viewing through the camera's finder, you are able to move your subject, and make precise adjustment. It has a close working distance and it is very convenient for taking close-up pictures of a fossil, or other inanimate things for example. This lens would have an equivalent field of view of an 85mm macro lens on a digital SLR camera (when used with the SD10).

Minimum aperture of F45

Although the depth of field this medium telephoto is shallow, sometimes would be necessary to have greater depth of field, because it is difficult to take a sharp picture of a subject and the background at the maximum aperture. Minimum aperture of F45 (F45 for Sigma, Canon and Konica Minolta mounts) or F32 (F32 for Nikon and Pentax mounts) provides greater depth of field.

A screw-in lens hood

A screw-in hood is included, for convenient use of circular polarising filters.
What's in the Box top
  • 50mm f/2.8 EX DG
  • Lens Hood
  • Front and Rear Caps
  • Instruction Manual
  • Warranty Card
Specification top
General
Lens Type
Macro
Focal Length
50-50 mm
Zoom / Fixed
Fixed
Lens Mount
Pentax
Min. Focal Length (mm)
50 mm
Max. Focal Length (mm)
50 mm
 
Performance
Focusing
Floating Focusing System
Closest Focusing Distance
18.9 cm
Silent motor
<not specified>
Angle of View
46.8
Maximum Aperture
f/2.8
Minimum Aperture
f/45
Max Magnification Ratio
1:1
Image Stabilizer
-
Aspherical Lens
-
 
Construction
Lens Construction (elements/groups)
10/9
Diaphragm Blades
7
Internal Focus
Yes
 
Physical Characteristics
Filter Diameter
55 mm
Diameter
71
Length
67
Weight
320
 
Customer Reviews top
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Ratings & Summary
Overall score (35)
 
 
 
 
 
 
 
 
 
 
 
9.3/10
User score (35)
 
 
 
 
 
 
 
 
 
 
 
9.2/10
 
PROS• lightweight • durable • strong construction • consistent output • quality construction
User Reviews
warehouseexpress.com
15 March 2010
A mediocre lens
I have this lens for quite some time. The autofocus system suffers. With the focus limiter engaged, very often it is diffucult for the lens to focus, even in daylight. Also, the lens is not fully corrected for chromatic aberration and this results in false colour reproduction. Read more ...
PROSWell built
CONSChromatic aberration, poor autofocus
2.0/10
J&R
9 January 2011
quality, perfomance, value
I use this product ...for close up shots of non moving object, but this lens can be use for portrait photography, or even landscape...take it as a essential prime lens with very good macro capability. Read more ...
PROSConsistent Output, Durable, Easily Interchangeable, Lightweight, Rugged, Strong Construction, Value low light
CONSAuto focus noisee, Slow Focus
8.0/10
Ebay
5 February 2012
Great all around lens. Perfect for the macro photographer.
The Sigma 50mm macro is one, sharp lens! It is just the lens I was looking for to take the walk-around shots I need and to take macro shots. It's focus is quick and precise. Even in macro mode the lens focuses fast and right to the point. The optics are clear and bright. Read more ...
10.0/10