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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 APO 200-500mm F2.8/400-1000mm EX DG lens. Courtesy of Sigma, with modifications by Michael R. Tomkins. PRESS RELEASE: Sigma announces APO 200-500mm F2.8/400-1000mm EX DG lens

  • The ultra telephoto zoom lens that offers a fast aperture of F2.8 at the 500mm and F5.6 at the 1000mm focal length
  • The dedicated “Attachment” ensures autofocusing at the 1000mm focal length.
  • SLD and three ELD glass elements provide high image quality from the maximum large aperture
  • Supplied with f72mm filter holder at the rear

An ultra telephoto zoom lens offering a fast aperture of F2.8 at the 500mm focal length and F5.6 at the 1000mm.

The Sigma Corporation is please to announce the new APO 200-500mm F2.8/400-1000mm F5.6 EX DG Lens.

This ultra telephoto zoom lens offers a fast aperture of F2.8 at the 500mm focal length and F5.6 at the 1000mm. It covers widely used focal lengths from 200mm to 500mm and has a large aperture of F2.8 throughout the entire zoom range. This lens can be used to create amazing image expression with various types of photography such as astrophotography, portraits, wildlife, sports. SLD (Special Low Dispersion) glass and three ELD (Extraordinary Low Dispersion) glass elements provide excellent correction for all type of aberrations. The super multi-layer coating reduces flare and ghosting and provides high image quality from the extremely large aperture. The lens hood, designed exclusively for this lens, blocks out extraneous light. A 72mm filter can be inserted at the rear of the lens, and a circular polarizing filter can be used in situ thanks to the ingenious internal rotation mechanism. The dedicated Li-ion battery BP-21 is used to power the zooming and AF operation. This battery is built in the lens barrel. For the convenience of the photographer, focusing distances and focal lengths can be viewed on the lens` built-in LCD panel.

Lens Construction

17 Elements in 13 Groups
Angle of View 12.3 - 5 degrees
Number of Diaphragm Blades 9 Blades
Minimum Aperture F22
Minimum Focusing Distance 200-500cm / 78.7-196.9in.
Maximum Magnification 1:7.7
Filter Size Diameter 72mm (Rear)
Lens Hood Petal-type Hood
Dimensions Diameter 236.5mm X Length 726mm
9.3 in. X 28.6 in.
Weight 15,700g/553.7 oz.
Corresponding AF Mounts SIGMA, CANON, NIKON

* The appearance, specifications, and the like of the product are subject to change for improvement without notice.
* The angle of view depends upon the digital camera being used.

(First posted on Thursday, January 31, 2008 at 19:21 EST)

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