The Rokinon 85 mm F/1.4 Aspherical Lens is a crystal clear lens for shooting photographs and videos.� This 85 mm zoom lens has a wide aperture range of f/1.4 to f/19, enabling great control over depth of field and light conditions. This fast lens for the Pentax camera is a manual focus lens with aperture needs on the lens itself. Rokinon 85 mm F/1.4 Aspherical Lens, built of mostly glass and aluminum components, is relatively light.��The Rokinon 85 mm F/1.4 Aspherical Lens is available with mounts that fit Canon, Nikon, Pentax, Sony and Olympus cameras. The minimum focusing distance of this fast lens for the Pentax camera is one meter, the angle of view is 28.3 degrees, and it has a filter size (outer lens size) of 72 mm, allowing it to shoot nearby objects in macro view, while using the available light to the maximum. This 85 mm zoom lens is ideal for shooting close ups and portraits in available light conditions.�