18-50mm F2.8 EX DC Macro

For use with smaller chip APS-c or 4/3 digital cameras only

Compact size weighing 16 ounces and only 3.2 inches in length

Two Aspherical glass elements offer correction for distortion

SLD (Special Low Dispersion) glass & ELD (Extra Low Dispersion) glass element provides optimum color correction & sharpness

Super Multi-Layer lens coating reduces flare & ghosting & assures high image quality throughout the entire zoom range

Inner focusing system eliminates front lens rotation making the lens suitable for use of polarizing filters

A minimum focusing distance of 8” & a maximum magnification factor of 1 to 3 make this excellent for up-close subjects

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#581 $660.00 MSRP

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PRODUCT OVERVIEW
PARTS & ACCESSORIES

SPECIFICATIONS

Lens Construction

15 Elements in 13 Groups

Angle of View

69.3º-27.9º (1)

Number of Diaphragm Blades

Mininum Aperture

f22

Minimum Focusing Distance

28 cm / 11 in

Filter Size (mm)

Maximum Magnifications

1:3

Dimensions
(Diameter x Length)

79x85.8 mm/3.1x3.4 in

Extended Dimensions

101.5 mm / 4 in

Weight

450g / 15.9oz.

Corresponding Mounts

Sigma
Canon
Sony/Minolta
Pentax	J
FourThirds

J - J type Pentax AF mount lens

(1) Angle of view at Sigma SD camera format

* The appearance, specifications, and the like of the product are subject to change for improvement without notice.

* Vignetting will occur if the lens is used with digital cameras with image sensors larger than APS-C size or 35mm SLR cameras.

* For Pentax mount, if the camera body does not support HSM, auto focus will not be available.

Chart Guide

MTF CHART

LENS CONSTRUCTION

Sigma’s 18-50mm F2.8 EX DC Macro large-aperture f2.8 enables fast and accurate auto focusing in this standard zoom lens for digital cameras which is perfect for professional photographer or serious amateur photographer. When you need to stand ready for any photo opportunity you need a fast aperture so you can shoot in low existing light or at maximum range with a flash this Sigma macro lens is perfect. With its compact size and light weight, it’s a necessary addition to your camera bag

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Specs:

f/11 1/1250

ISO:

200

Camera System:

Sony/Minolta

Credit:

Fernando Meza

Photo Notes: "Portrait" of my older brother on a trip to the Pyramid ruins in Teotihuacan. He's willing and strong, he's been doing exercise, eating healthier, and staying clean because he will be a donor of bone narrow that I myself need due to an advance Leukemia that I had for 3 years now. I try to give him a look of power and hope... almost superhero-like, because that's exactly the way that I look up to him right now.
Specs:

F/3.2 1/200

ISO:

125

Lens:

18-50 Sigma f/2.8

Credit:

Ming Chien
Specs:

f/16 2s

ISO:

100

Lens:

Sigma 18-50mm 2.8

Credit:

Roberto Garcia

Photo Notes: The beautiful Monterey Coast
Specs:

f/22 10s

ISO:

100

Lens:

Sigma 18-50mm 2.8

Credit:

Roberto Garcia

Photo Notes: The inner beauty of the flower
Specs:

f/3.5 1/1000

ISO:

250

Credit:

Mark Gurifnkel

Photo Notes: My daughter.. the innocence of childhood
Specs:

f/11 1/180sec

ISO:

400

Lens:

Sigma 18-50mm f/2.8

Credit:

James Luhrs

Photo Notes: New Zealand - Come Visit
Specs:

f/3.3 1/1000sec

ISO:

400

Lens:

Sigma 18-50mm f/2.8

Credit:

Fuji S3Pro

Photo Notes: Try not to get the camera covered in too much mud