Sigma 10-20mm f/4-5.6 and 70-200mm f/2.8 II EX lenses

Press Release:
The Sigma Corporation are pleased to announce the 10-20mm M for the Four Thirds fitting.

The super wide-angle capability of the 10-20mm zoom makes it a very powerful tool for both indoor and landscape photography. The wide angle of view (94.5°at 10mm on Four Thirds cameras) offers broader perspective, and gives the photographer greater freedom of expression.

Three SLD glass elements are employed for effective compensation of colour aberration, a common problem with super-wide angle lenses. One moulded glass element 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 HSM design providing quiet, high speed autofocus while offering full time manual focusing. It has a minimum focusing distance of 24cm (9.4in) at all focal lengths.

The non-rotating lens barrel is eminently suitable for the petal shaped lens hood (included) and circular polarising filters.

Specifications:

• Focal Length 10-20mm Minimum Focusing Distance 24cm
• Minimum Aperture f/22 Maximum Magnification 1:6.7
• Lens Construction 14 Elements in 10 Groups Filter Size 77mm
• Angle of View 94.5°- 56.8° Lens Hood Petal Hood
• No. of Diaphragm Blades 6 pcs Weight 470g
• SRP £369.99
• Available April 2008

Also announced is the new Sigma 70-200mm f/2.8 II EX DG Macro HSM lens in the Four Thirds mount.

This large aperture zoom lens has improved optical performance and retains close-up ability with a minimum focusing distance of 100cm/39.4in and maximum magnification ration of 1:3.5. This lens is suitable for taking all type of subjects such as portraits, landscape, and close-up pictures.

Two SLD （Special Low Dispersion） and three ELD (Extraordinary Low Dispersion) glass elements provide excellent correction for all types of aberrations. High image quality is assured throughout the entire zoom range. The super multi-layer coating reduces flare and ghosting.

This lens incorporates HSM (Hyper Sonic Motor), which ensures a quiet and high-speed AF as well as full-time manual focusing capability. The lens design incorporates an inner focusing and inner zooming systems. The overall length of the lens does not change during focusing and zooming, ensuring convenient handling.

A removable tripod collar (TS-21) is included as a standard component.

Specifications:

• Focal Length 70-200mm Minimum Focusing Distance 100c
• Minimum Aperture F22 Maximum Magnification 1：3.5
• Lens Construction 18 Elements in 15 Groups Filter Size 77mm
• Angle of View 34.3°-12.3° Lens Hood Petal Hood
• No. of Diaphragm Blades 9 pcs Weight 1370 grams
• SRP £799.99
• Available April 2008

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