2008 Photo Marketing Association Tradeshow
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The following is an unedited press release, shown as received from the company represented. We've elected to present selected releases without editorial comment, as a way to provide our readers more information without further overtaxing our limited editorial resources. To avoid any possible confusion or conflict of interest, the Imaging Resource will always clearly distinguish between company-provided press releases and our own editorial views and content.

Sigma's 10-20mm F4-5.6 EX DC HSM lens for Four Thirds. Courtesy of Sigma, with modifications by Michael R. Tomkins. PRESS RELEASE: Sigma announces 10-20mm F4-5.6 EX DC HSM lens for Four Thirds


The Sigma Corporation is pleased to announce the new 10-20mm F4-5.6 EX DC HSM for Four Thirds, wide-angle zoom lens designed exclusively for digital SLR cameras with capability of wide angle photography.

This lens will be showcased at PMA, which starts on January 31st 2008 in Las Vegas, U.S.A. The introduction of this new lens increases our lens line-up for Four Thirds mount to a total of eleven models.

This wide-angle zoom lens has an angle of view of 94.5 – 56.8 degrees. It is a very powerful tool for landscape photography and produces striking image with exaggerated perspective. Three SLD (Special Low Dispersion) glass elements and three Aspherical lenses provide optimum image quality throughout the entire zoom range. This lens incorporates HSM (Hyper Sonic Motor), ensuring a quiet and high speed AF as well as full-time manual focusing capability.

Case, Petal-type Hood (LH825-04) supplied

*With Four Thirds cameras, the focal length will be equivalent to 20-40mm.

Lens Construction

14 Elements in 10 Groups
Angle of View 94.5 - 56.8 degrees
Number of Diaphragm Blades 6 Blades
Minimum Aperture F22
Minimum Focusing Distance 24cm / 9.4 in.
Maximum Magnification 1:6.7
Filter Size Diameter 77mm (Rear)
Lens Hood Petal-type Hood
Dimensions Diameter 83.5mm X Length 86.4mm
3.3 in. X 3.4 in.
Weight 495g/17.5 oz.

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


(First posted on Thursday, January 31, 2008 at 19:15 EST)

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