Digital camera owners seeking a fisheye lens that effectively captures expansive settings with clarity and detail should give some thought to the Pentax SMCP-DA. With its 2.7 x 2.8-inch measurements and 11.3-oz weight, this Pentax digital camera lens is perfect for busy photographers. Lens construction within this 10-17 mm f/3.5-4.5 lens consists of eight elements in 10 groups. Using extra-low dispersion (ED) glass, this lens produces fine-tuned, crisp images with little chromatic aberration. This exclusively digital lens combines full-frame fisheye and wide-angle performance in one outstanding device. The image circle in the Pentax SMCP-DA is smaller than those found in 35-mm cameras allowing optimal digital imaging, but makes this lens incompatible with 35-mm cameras. The improved schematics of this Pentax digital camera lens reduce flare and ghosting. A special-protective coating, derived from Fluoride protects the front lens of this 10-17 mm f/3.5-4.5 lens from dirt and debris and allows for easier cleaning. With a minimum shooting distance of less than one inch, this lens allows for detailed macro photos of incredibly small items. With its super-macro ability, improved design, and quality materials, the Pentax SMCP-DA is a great option for digital camera owners.