 Sigma ultra-telephoto zoom lens
A zoom lock switch eliminates 'zoom creep' during transportation, a convenient addition when traveling. The HSM (Hyper Sonic Motor) models provide quiet high-speed AF function, as well as full-time manual focus capability., The rear focus mechanism produces a non-rotating front lens element which accepts a bayonet “Petal-type Hood”, which prevents extraneous light from degrading the image quality.
Sigma 50-500mm - APO teleconverter
By adding an APO teleconverter (sold separately), you can use this lens as a 140-700mm F7.3-8.8 MF ultra-telephoto zoom lens with a 1.4X EX teleconverter, or as a 200-1000mm F10.4-12.6 MF ultra-telephoto zoom lens with a 2X teleconverter. (Teleconverters can be used in 100mm - 500mm focal length range)
Sigma 50-500mm F4-6.3 EX DG HSM lens - Specifications
• Focal Length : 50-500mm
• Minimum Aperture : F22
• Lens Construction : 20 Elements in 16 Groups
• Angle of View : 46.8°- 5°
• Number of Diaphragm Blades : 9pcs
• Minimum Focusing Distance : 100cm –300cm(39.3”-118.1”)
• Maximum Magnification : 1:5.2
• Filter Size : 86mm
• Lens Hood : Petal Hood
• Dimensions : Diameter 95mm (3.7”) x Length 218.5mm (8.6”)
• Weight : 1842gr/64.9oz
• SRP : £899.99
• Fittings : Sigma, Canon and Nikon-D, (Konica/Minolta and Pentax TBA)
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Sigma 50-500mm F4-6.3 EX DG HSM lens : Sigma Corporation is pleased to announce the launch of the new 50-500 F4-6.3 EX DG HSM lens. This high zoom ratio lens is optimized for digital SLR cameras and capable of covering a wide range of focal lengths from 50mm standard to 500mm ultra telephoto. This ultra-zoom lens employs a seven-group zoom system, which provides a high zoom magnification of 10x. Triple-cam Rear Focusing System ensures high precision throughout the whole focus range. The new lens coating reduces flare and ghost, which is a common problem of digital cameras and also creates an optimum color balance. This lens uses four pieces of SLD (the special low dispersion) glass for excellent correction of color aberration.
