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Sigma's AF 17-35mm F2.8-4 EX DG ASPHERICAL / HSM lens. Courtesy of Sigma, with modifications by Michael R. Tomkins. Sigma announces updated 17-35mm lens
By
(Wednesday, November 19, 2003 - 13:38 EST)

Sigma Corp. has announced an updated version of its 17-35mm F2.8 - 4 zoom lens with a revised optical and mechanical design.

The Sigma 17-35mm F2.8-4 EX DG ASPHERICAL HSM zoom lens weighs 560 grams, and has a diameter of 83.5mm with a length of 86.2mm. It will be available in Sigma, Canon, Nikon, Minolta and Pentax mounts, and uses a Hyper Sonic Motor (Sigma, Nikon and Canon mounts only) allowing full-time manual focus capability.

Diagram showing the construction of Sigma's AF 17-35mm F2.8-4 EX DG ASPHERICAL / HSM lens. Courtesy of Sigma, with modifications by Michael R. Tomkins. Click for a bigger picture!

The Sigma and Canon-mount versions of the new lens will ship on December 12th, followed by a Nikon-mount version at the end of December, and Minolta / Pentax-mount versions in January 2004. Pricing has not yet been announced.



Sigma AF 17-35mm F2.8 - 4 EX DG ASPHERICAL / HSM
Sigma's AF 17-35mm F2.8-4 EX DG ASPHERICAL / HSM lens. Courtesy of Sigma, with modifications by Michael R. Tomkins. Click for a bigger picture!
Focal Length 17-35mm
Minimum Aperture F22
Lens Construction 16 Elements in 13 Groups
Focusing System Inner Focus
Angle of View 103.7° - 63.4°
Number of Diaphragm Blades 8 pcs
Minimum Focusing Distance 27cm (10.6”)
Maximum Magnification 1 : 4.5
Filter Size 77mm
Lens Hood Petal Hood
Dimensions Diameter 83.5mm (3.3”) x Length 86.2mm (3.4”)
Mounts (AF)
Sigma, Canon; Available on December, 12th 2003
Nikon (D); Available toward the end of December 2003
Minolta (D), Pentax; Available in January, 2004
Weight 560gr / 19.8 ounces
.
The appearance and specifications of the product are subject to change for improvement without notice.

Original Source Press Release:

17-35mm F2.8-4 EX DG ASPHERICAL HSM

Covers a super-wide angle of view 104 degrees. Its large aperture makes this lens an excellent companion for both Digital SLRs and Film Cameras.

  • Minimum focusing distance of 27cm at all focal lengths.
  • Maximum Magnification of 1:4.5
  • HSM (Hyper Sonic Motor) system (only for Sigma, Nikon and Canon mounts). Featuring full time manual focus.
  • EX DG Series, the ideal lens for Digital SLR Cameras.

Sigma Corporation is pleased to announce the launch of the new 17-35mm F2.8-4 EX DG ASPHERICAL HSM.

The lens covers a super-wide angle of view 104° and has a large-aperture. It has a minimum focusing distance of 27mm at all focal lengths, and maximum magnification ratio of 1:4.5. The models which are equipped with HSM (Hyper Sonic Motor) system are ensured a quiet, high-speed AF as well as offering Full Time Manual Focusing. Special Low Dispersion (SLD) and two aspherical glass elements provide excellent compensation for distortion as well as for various aberrations. 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.

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