<ul><li>Dedicated to Pentax AF SLR cameras</li><li>Full-frame fisheye autofocus lens</li><li>Allows for a variety of unusual compositions</li><li>Optical material used in this new lens are lead- and arsenic-free ecological glass</li><li>Accepts removable gelatin filters</li></ul> Amazon.com With Sigma's 15mm f2.8 EX diagonal fisheye lens, you can fill an entire 35mm negative with a full 180-degree diagonal field of view. This feature lets you create unusual and unique compositions out of ordinary subject matter or landscapes. Add color or deepen the contrast of your photographs by adding any number of gelatin filters to the slide-in holder near the rear of the lens. The unusually large maximum aperture of f2.8 gives you high-definition close-ups and more detailed nighttime shots. The optical material used in this new lens is constructed of lead-free and arsenic-free ecological glass. This model is dedicated to Pentax AF SLR cameras.

Sigma 15mm F2.8 EX Diagonal Fisheye Lens for Pentax SLR Camera