IRIX 11mm f/4.0 Blackstone Lens for Pentax DSLR Cameras - Manual Focus #IL11BSPK

Angle of view of 126½ and a focus distance of 0.275 m (0.9 ft) Clearly-labeled infinity position for the focus ring with a noticeable click-stop to make it easy to find, even in the dark Ideal for landscape, nature, architecture, real estate photography and astrophotography UV reflective, engraved markings, ideal for night photography 4 highly refractive lenses (HR), 2 ED lenses and 3 aspherical lenses guarantee minimal distortion, as low as 3.13% Focus lock allowing you to maintain the chosen setting at any time Weather sealed construction resists the elements for use in the harshest conditions Blackstone version lens features - Aluminium internal construction and magnesium housing with anti-scratch finish - Metal Focusing ring - Engraved Markings - - Weather sealed front lens element -