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Sigma APO 135-400mm F4.5-5.6 lens

Ilse Jurrien
Photokina report
Tuesday 26th, September 2006
Posted by: Ilse Jurrien

Sigma launched today a new Four-Thirds system compatible, compact telephoto zoom lens; Sigma APO 135-400mm F4.5-5.6 DG. This telephoto zoom lens gives the equivalent field of view to our popular 800mm when used on Four-Thirds cameras. The very latest lens coating technology and lens design reduce flare and ghosting, a common problem with digital cameras. This lens uses one aspherical lens and three Special Low Dispersion (SLD) glass elements for excellent correction of various aberrations. The rear focusing system ensures fast focusing speed as well as preventing the front of the lens rotating, making it particularly suitable for use with circular polarizing filters.

Sigma APO 135-400mm lens

Sigma telephoto 135-400mm lens
A removable tripod collar is included as a standard component. The introduction of this new lens increases Sigma's lens line-up for Four Thirds mount to a total of eleven models. With Four Thirds cameras, the focal length will be equivalent to 270-800mm.

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Sigma APO lens - Specifications
• Mount Type : Four Thirds
• Minimum Aperture : F22
• Lens Construction : 13 Elements in 11 Groups
• Angle of View : 9.2°-3.1°
• Number of Diaphragm Blades : 9pcs
• Minimum Focusing Distance : 200cm(78.7”)-220cm (86.6”)
• Maximum Magnification : 1:5.3
• Filter Size : 77mm
• Lens Hood : Bayonet type Hood
• Dimensions : Diameter 83.5mm (3.3”)X Length 189mm (7.4”)
• Weight : 1280g / 45.1oz
• UPC No. : 0085126 727581

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