NewsDecember 2005

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Sigma 10-20mm for Pentax and KM

Sigma has announced a 10-20mm DC lens is now available for Konica Minolta and Pentax mounts. The super wide angle F4-5.6 EX DC lens is designed exclusively for digital SLR cameras and is suited to cameras with APS-C-sized image sensors. Special features include a new multi-layer lens coating, three pieces of Special Low Dispersion glass and three aspherical lens elements. It also has a minimum focusing distance of 24cm at all focal lengths.

Press Release:

10-20mm F4-5.6 EX DC for Konica Minolta and Pentax digital SLR cameras

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

• It covers a super wide angle of view 109.4°to 70.5°
• New multi-layer lens coating
• Three pieces of Special Low Dispersion (SLD) elements and three aspherical lens
  elements produce top quality optical performance
• Minimum focusing distance of 24cm (9.4”) at all focal lengths

Sigma Corporation is pleased to announce the launch of the new 10-20mm F4-5.6 EX DC lens for Konica Minolta and Pentax digital SLR cameras. This exclusively designed zoom 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. It covers a super wide angle of view 109.4°to 70.5°and has a wide-angle perspective throughout the zoom range. The new multi layer lens coating and lens design reduce flare and ghost, which is a common problem with digital cameras and also creates an optimum color balance through the entire zoom range.

Three SLD (Special Low Dispersion) 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 incorporates an internal focusing system, which provides high speed AF performance as well as a minimum focusing distance of 24cm (9.4”) throughout the entire zoom range. It is also equipped with a Petal-type hood to block out extraneous light.

Sigma 10-20mm F4-5.6 EX DC lens specification

Focal length	10-20mm
Minimum aperture	F22
Lens construction	14 Elements in 10 Groups
Angle of view	109.4°- 70.5°
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 80.5mm (3.2”)
Weight	370gr /13.0 oz
Optional accessories	• EX Filter Multi-Coated UV77 mm (UPC Code: 0085126 912468) • EX Filter Wide Multi-Coated Circular PL77 mm (UPC Code: 0085126 912567)

• The appearance, specifications, and the like of the product are subject to change for improvement 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.