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The Sigma Sigma 8-50mm F2.8 EX DC lens for digital SLR cameras

Sigma announces a new 18-50mm F2.8 EX DC lens which is designed specially for digital SLR cameras. The lens offers a large aperture over all available focal lenghts which makes it a good choice for low light conditions. The minimum focus distance is 11 inch (28 cm) throughout the zoom range ...


The Sigma Sigma 8-50mm F2.8 EX DC lens for digital SLR cameras - digital camera and photography newsLarge Aperture of F2.8 covers the entire range of focal lengths.
This lens offers a large aperture of F2.8 over its entire range of focal lengths and its large depth of field offers greater freedom of creative expression.
This lens is perfectly suited for low light conditions indoors or at dusk. It covers wide angle to medium telephoto and is ideally suited to a wide range of subjects. It is an ideal large aperture standard zoom lens for digital SLR cameras featuring APS-C size image sensor.
EX Lens Series; Excellence Of Engineering And New Technology.
The characteristics of digital SLR cameras were taken into consideration when designing the lens power layout. A Special Low Dispersion (SLD) glass lens element provides effective compensation for lateral chromatic aberration, which is likely to occur with digital SLR cameras. The use of two aspherical lens elements provides correction for various aberrations and makes high quality images a reality throughout the entire zoom range.

Compact And Lightweight, Yet Robust
A Special Low Dispersion (SLD) lens and two aspherical lens elements provide excellent correction for all types of aberrations. The design produces a compact and lightweight, yet robust, construction with an overall length of 84.1mm (3.3in.) and maximum diameter of 74.1mm (2.9in.) and weight of 445g (15.7oz).

Most Appropriate Coating for Digital Products
Super Multi Layer (SML) coating gives the best color balance and reduces flare and ghosting from which digital cameras tend to suffer.

Minimum Focusing Distance of 28cm (11in.) throughout the entire zoom range
This lens has a minimum focusing distance of 28cm (11in.) throughout the entire zoom range which is very convenient for close-up photography.

Inner Focus System
The lens is equipped with an inner focusing system. The non-rotating front lens element makes the lens suitable for using its petal-type lens hood and circular polarizing filters.

New Optical Design Effectively Reduces Vignetting
This lens has excellent correction for vignetting which is a common problem of large aperture lenses. Its new design ensures superior peripheral brightness.

Corresponding AF Mounts: SIGMA SA, CANON, NIKON(D) and PENTAX *Focal Length :18-50mm
*  Minimum Aperture :F22
*  Lens Construction :15 Elements in 13 Groups
*  Angle of View :69.3degree- 27.9degree
*  Number of Diaphragm Blades :7pcs
*  Minimum Focusing Distance :28cm (11in.)
*  Maximum Magnification :1:5 *Filter Size :67mm
*  Lens Hood :Petal-type hood
*  Dimensions :Diameter 74.1mm (2.9 in.)X Length 84.1mm (3.3in.)
*  Weight :445gr/15.7ounces
*  The appearance, specifications, and the like of the product are subject to change for improvement without notice.
*  An image sensor element larger than those corresponding to APS-C cannot be used in digital cameras or 35mm SLR cameras. If such an element is used vignetting will occur on the picture surface.

Optional Accessories
SIGMA EX Multi-Coated UV 67 mm Filter
SIGMA EX Wide Multi-Coated Circular PL 67 mm Filter
August 27, 2004
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