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Sigma 24-60mm F2.8 EX DG lens introduction
Dennis Hissink : February 11th 2004 - 01:00 CET
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Sigma Sigma 24-60mm F2.8 EX DG lens introduction : We have just arrived in Las Vegas where the PMA kicks off. This will be a great show with numerous introductions of new digital cameras, innovations, printers, scanners and lenses for the DSLR cameras. Last quarter of 2003 Sigma already introduced 1 new DSLR and 4 new lenses so the PMA will be used to present all those introductions to the visitors. However, today Sigma announces another new lens; the Sigma 26-60mm F2.8 EX DG lens. From super-wide-angle of 24mm this lens has a very compact design as well as a large-aperture. By effective arrangement of Special Low Dispersion (SLD) and aspherical glass elements, this lens has compact dimensions of 83.6mm maximum diameter, and 87mm length.
Sigma 24-60mm F2.8 EX DG lens introductionSigma EX DG lens - SLD glass
It is capable of taking pictures from a close distance, minimum focusing distance is 38cm at all focal lengths, and it has a maximum magnification ratio of 1:5.8. Two Special Low Dispersion (SLD) glass elements are provided for effective compensation of color aberration, which is a common problem with super-wide angle lenses. One piece of Glass Mold Aspherical and three pieces of Hybrid Aspherical, total four pieces of aspherical lenses offer excellent correction for distortion as well as all types of aberration.

Sigma 24-60mm EX DG lens - Digital concept
The design concept of this lens is especially suitable for the characteristics of Digital SLR Cameras. The high performance inner focus system is particularly suitable for using circular polarizing filters and a petal-type hood as the front of the lens does not rotate. The Sigma 24-60mm EX DG lens is also equipped with Zoom Lock Switch that eliminates "Zoom Creep". This remarkably compact high performance zoom lens is ideally suited for travelling.

Sigma AF 24-60mm EX DG specifications
- Focal Length: 24-60mm
- Minimum Aperture: F22
- Lens Construction: 16 Elements in 15 Groups
- Focusing System: Inner Focus
- Angle of View: 84.1 °- 39.6 °
- Number Diaphragm Blades: 9pcs
- Minimum Focusing Distance: 38cm (14.9")
- Maximum Magnification: 1:5.8
- Filter Size (diameter): 77mm
- Lens Hood: Petal Hood
- Dimensions: Diameter 83.6mm (32.9") X Length 87mm (34.2")
- Mounts (AF): Sigma, Canon, Nikon (D), Minolta (D) and Pentax
- Weight: Not determined

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