Sigma 300mm f/2.8 EX DG IF HSM APO Telephoto Lens for Pentax and Samsung SLR Cameras

Ultra compact apochromatic telephoto lens with a fast f2.8 maximum aperture, and incorporates two extraordinary low dispersion glass elements (abbe number 90.3), to reduce chromatic aberration to a minimum. It incorporates internal focusing which enables responsive and fast auto focus speed. Minimizing Flare and Ghost This new lens has a special coating to reduce internal reflection and minimize flare and ghost, which is a common problem with digital cameras and also creates an optimum color balance. Excellent image quality with ELD glass elements This lens uses two ELD glass elements reduce chromatic aberration to a minimum and also ensure sharp, quality images of high contrast. Rear Filter A drop-in 46mm filter holder in the rear part of the lens barrel can be rotated to fac more »