Feb 14, 2005

Sigma Releases 10-20mm F4-5.6 EX DC HSM Super Wide Angle Zoom Lens

How sweet is this? I expect Sigma is going to sell a boat load of these considering the multiplication factor of digital SLRs these days.

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 10mm and 63.8 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.

This lens is equipped with an inner focusing system, and the models which are equipped with HSM system provide quiet, high speed autofocus shooting and also offer full time manual focusing. It has a minimum focusing distance of 24cm (9.4”) at all focal lengths. The non-rotating lens barrel perfectly suits the petal shaped lens hood. A circular polarizing filter can also be used conveniently.


It covers a superwide angle of view 102.4degree to 63.8degree
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.

  • Focal Length :10-20mm

  • Minimum Aperture :F22

  • Lens Construction :14 Elements in 10 Groups

  • Angle of View :102.4 degree - 63.8 degree

  • Number of Diaphragm Blades :6 pcs

  • Minimum Focusing Distance :24cm (9.4”)

  • Maximum Magnification : 1:6.7

  • Filter Size :77mm

  • Lens Hood : Petal Hood

  • Dimensions :Diameter 83.5mm (3.3”)X Length 81mm (3.2”)

  • Weight :TBD

* The appearance and specifications are subject to change without notice.
* Vignetting will occur if the lens is used with digital cameras with image sensors larger than APS-C size or 35mm SLR cameras