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Sigma 50-500mm f/4-6.3 EX APO EX DG HSM Telephoto Zoom Lens with Hood for Pentax AF Cameras.
Mfr. Part: 736109 SKU: SG50500NPXAF
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Item Includes
Lens Hood, Front & Rear Lens Caps, Carry Case with Strap, 4-Year USA Warranty, 1-Year International Warranty
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Description
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. 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 elementwhich accepts a bayonet "Petal-type Hood", which prevents extraneous light from degrading the image quality.
By adding an APO teleconverter (sold separately), you can use this lens as a 140-700 .... ..7.3-8.8 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.. |
Features
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High Magnification Ultra Telephoto Zoom Lens, with a 10x zoom ratio from 50mm to 500mm, optimized for digital SLR cameras. |
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Most effective coating for minimizing flare and ghost with digital SLR cameras. |
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Triple-cam Rear Focusing System ensures high precision throughout the whole focus range. |
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Uses four SLD (the special low dispersion) glass elements for superior optical performance. |
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Accepts both 1.4X and 2X APO EX Tele-Converters, the lens can be used as a 1000mm ultra-telephoto zoom lens. |
Specifications
| Construction | 16 Groups /20 Elements |
| Angle of view | 46.8° - 5° |
| F stop range | 22 |
| Closest Focusing Distance | 100-300cm / 39.4-118.1 " |
| Maximum Magnification | 1:5.2 |
| Filter Size | 86mm C |
| Dimensions (Length x Diameter) | 95 x 218mm / 3.7 x 8.6" |
| Weight | 1,842g / 64.9oz. |
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