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The SIGMA 500mm F4.5 EX DG APO HSM Lens, a Fast maximum aperture F4.5 telephoto lens optimized for digital SLR
cameras.
This ultra-telephoto lens has a fast maximum aperture, and also features a
new super multi-layer coating, which optimizes the characteristics of digital
SLR cameras. Two ELD glass elements in the front lens elements reduce chromatic
aberration to a minimum and also ensure sharp, quality images of high
contrast.
New coating reduces Ghost and Flare
The new multi layer lens coating and lens design reduce flare and ghost,
which is a common problem with digital cameras and also creates an optimum color
balance.
It is equipped with ELD (Extra Low Dispersion) glass elements
Two ELD glass elements in the front lens elements reduce chromatic aberration
to a minimum and also ensure sharp, quality images of high contrast.
It also features a rotatable drop-in filter
It also features a drop-in 46mm filter holder in the rear part of the lens
barrel, which can be rotated to facilitate the use of filters, including a
polarizing filter.
HSM (Hyper Sonic Motor for Sigma, Canon and Nikon mount lenses)
The AF drive for Sigma SA, Canon and Nikon S.L.R. cameras features Sigma’s
ultra-quiet and high-speed Hyper Sonic Motor (HSM).
Inner Focus
Inner focusing retains external dimensions for ease of handling.
Accepts both 1.4X and 2X APO EX Tele-Converters.
By adding an APO teleconverter (optional extra), you can use this lens as a
700mm F6.3 MF ultra-telephoto lens with a 1.4X EX teleconverter, or as a 1000mm
F9 MF ultra-telephoto lens with a 2X teleconverter.
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