Sigma 800mm f/5.6 EX APO Autofocus Lens for Pentax AF 35mm Primes
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Sigma 800mm f/5.6 EX APO Autofocus Lens for Pentax AF 35mm Primes
DESCRIPTION
The gargantuan 800mm f/5.6 EX APO HSM is an apochromatic ultra-telephoto lens with a fast f/5.6 maximum aperture. Two Extra-Low Dispersion glass elements reduce chromatic aberration to a minimum. Internal focusing assists autofocus speed and handling. Theres a rotating filter holder in the rear of the lens barrel which enables easy use of the included circular polarizer. Sigmas dedicated APO EX teleconverters can be used with this lens.