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Sigma DG lenses for Four Thirds mount
Ilse Jurriën : February 26th 2006 - 04:30 CET
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 Sigma DC lenses for Four Thirds mount : Sigma Corporation is pleased to announce the launch of three new lenses for Four Thirds System. The Sigma Macro 105mm F2.8 EX DG lens, a high performance medium telephoto macro lens optimized for Four Third cameras, the Sigma APO Macro 150mm F2.8 EX DG HSM lens; a super compact and lightweight, large aperture telephoto lens with life-size Macro capability for Four Thirds cameras and the Sigma APO 50-500mm F4-6.3 EX DG HSM lens; a telephoto zoom lens capable of covering a wide range of focal lengths for Four Thirds cameras. These Sigma lenses are designed to maximize the potential of the digital imaging, and housed in a compact and lightweight construction.
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 Sigma Macro 105mm F2.8 EX DG
High contrast and excellent image quality are made possible in all shooting ranges. This Macro lens maximizes the potential of Four-Thirds system. The power layout and multi layer lens coating reduce the influence of harmful light caused by reflections from the digital image sensor. A screw-in hood is included, for convenient use of circular polarizing filters. With Four-Thirds cameras, the angle of view will be equivalent to 210mm focal length.
Sigma APO Macro 150mm F2.8 EX DG HSM
This large aperture telephoto Macro lens enables you to shoot up to 1:1 life size close-up. This Macro lens maximizes the potential of Four-Thirds mount system. This lens reduces the chromatic aberration of magnification, which is a critical problem for digital imaging. The best use of SLD (Special Low Dispersion) glass corrects the various color aberrations. Super multi coating reduces flare and ghost. The HSM (Hyper Sonic Motor) system provides full-time manual focus. With Four-Thirds cameras, the angle of view will be equivalent to 300mm.
Sigma APO 50-500mm F4-6.3 EX DG HSM
This versatile 10x high zoom ratio lens designed specifically for the digital imaging and it covers the wide range of the focal lengths. This lens uses SLD (Special Low Dispersion) glass for correction of color aberration, and seven-group zoom system provides a high magnification throughout the entire zoom range. Super multi coating reduces flare and ghost. The HSM (Hyper Sonic Motor) system provides quiet high-speed auto-focus shooting, as well as full-time manual focus. With Four-Thirds cameras, the angle of view will be equivalent to 100-1000mm.
Sigma Macro 105mm F2.8 EX DG - Specification
• Mount Type : Four Thirds
• Minimum Aperture : F22
• Lens Construction : 11 Elements in 10 Groups
• Angle of View : 11.8°
• Number of Diaphragm Blades : 8pcs
• Minimum Focusing Distance : 31.3cm (12.33”)
• Maximum Magnification : 1-1
• Filter Size : 58mm
• Lens Hood : Bayonet type Hood (Screw-in)
• Dimensions : Diameter 55.2mm (2.2”)X Length 102.9mm (4.1”)
• Weight : 470g / 16.6oz
Sigma APO Macro 150mm F2.8 EX DG HSM - Specification
• Minimum Aperture : F22
• Lens Construction : 16 Elements in 12 Groups
• Angle of View : 8.2°
• Number of Diaphragm Blades : 9pcs
• Minimum Focusing Distance : 38cm (15.0”)
• Maximum Magnification : 1-1
• Filter Size : 72mm
• Lens Hood : Bayonet type Hood
• Dimensions : Diameter 80.5mm (3.2”)X Length 142.4mm (5.6”)
• Weight : 920g / 32.4oz
Sigma APO 50-500mm F4-6.3 EX DG HSM - Specification
• Mount Type : Four Thirds
• Minimum Aperture : F22
• Lens Construction : 20 Elements in 16 Groups
• Angle of View : 24.4°-2.5°
• Number of Diaphragm Blades : 9pcs
• Minimum Focusing Distance : 100-300cm (39.37”-118.11”)
• Maximum Magnification : 1-5.2
• Filter Size : 86mm
• Lens Hood : Petal Hood
• Dimensions : Diameter 95mm (3.7”)X Length 223.9mm (8.8”)
• Weight : 1830g / 64.5oz
About Sigma
∑ SIGMA is the Greek letter equivalent to the English letter "S." In mathematics, it's a sign used to show the total sum. For photographers everywhere, Sigma is the total sum of the research, development, manufacturing and service of the world's leading line of lenses and cameras. Sigma ensures a high, consistent level of quality by processing our own high-performance Special Low Dispersion glass (SLD), metal and resins, surface treatments and other elements right here inside the factory itself. Sigma coordinates the development, production and sales of its technology worldwide through an impressive network of offices in Japan, the United States, Germany, France, United Kingdom, the Benelux countries, Hong Kong and Singapore.
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