Pre-PMA 2005: The second of three DC (digital SLR only) lenses announced by Sigma today is the 10 - 20 mm F4.0 - F5.6 EX DC HSM, an interesting super wide-angle lens which would provide 15 - 30 mm equiv. on a 1.5 FOV crop camera (such as the Nikon D70). This lens also features Sigma's HSM (HyperSonic Motor) for high speed silent focusing with manual focus override.

Press Release:

Sigma 10-20mm F4.0-5.6 EX DC HSM

Super wide-angle zoom lens designed exclusively for digital SLR cameras

• It covers a superwide angle of view 102.4°to 63.8
• Three pieces of Special Low Dispersion (SLD) elements and three aspherical lens
  elements produce top quality optical performance
• Inner focusing system ensures the length of the lens remains unchanged whilst
  controlling aberrations
• Equipped with HSM (Hyper Sonic Motor) system
• Minimum focusing distance of 24cm (9.4”) at all focal lengths
• Relatively compact, lightweight for an ultra wide-angle zoom lens

Sigma Corporation is pleased to announce the launch of the new 10-20mm F4-5.6 EX DC HSM lens.

10-20mm F4-5.6 EX DC HSM lens allows enjoyment of super wide-angle photography and it is a very powerful tool for indoor shooting and landscape photography with APS-C size image sensors of digital SLR cameras.

Wide angle of view (102.4°at 10mm and 63.8°at 20mm) offers the photographer greater freedom of expression. Three SLD glass elements are employed for effective compensation of color aberration, which is a common problem with super-wide angle lenses. One piece of glass mold and two hybrid aspherical lenses, offer excellent correction for distortion, as well as all types of aberration.

Sigma 10 - 20 mm F4.0 - F5.6 EX DC HSM lens specifications