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Optical design
| Format: 35mm SLR
Type: Prime lens
Focusing: Auto Focus (AF)
Lens mounts: Canon EF, EF-S, Sony A / Minolta A, Nikon F (FX, DX), Pentax K
First year of production: 2005
Optical design: 12 elements in 9 groups
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Specifications:
| Focal length | Max. aperture | Min. aperture | Blades | Min. Focus (m.) | Filter Ø (mm.) | Weight (gr/oz) | Length (mm/in) |
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| 500mm | f/4.5 | f/32 | 9 | 4 | 46 | 3100/109,3 | 350/13,8 |
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Additional information:
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Angle of view 5°
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Diameter 123 mm
The Sigma AF 500mm f/4.5 EX DG APO HSM is a super telephoto apochromatic prime lens for digital full format autofocus cameras.
The optical scheme of the lens consists of 12 elements in 9 groups, including two ELD elements. All the optical elements are made of ecologically pure glass with no lead and arsenic.
The system of internal focusing and rotating filter holder in the rear part of the lens barrel enable the use of a polarizer. It is compatible with the Sigma APO EX Tele Converter 1.4x MF and 2x MF without autofocus.
Links to online resources:
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Posted by: mysterion Date of publication: 28.09.2011
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