Opteka high definition 0.20x is a professional lens that is compatible with many types of digital cameras and comes in wide range of sizes. The ultrawide angle of this Opteka fisheye lens is capable of producing the visual distortion needed to create a wide panoramic or hemispherical image. Fisheye lenses such as this professional high definition lens forgo images with straight lines of perspective, opting instead for a technique that delivers images with nonrectilinear appearance. The Opteka high definition 0.20x delivers superior clarity in photos. The ability of this Opteka fisheye lens to provide wide angle views is useful in capturing images of events such as extreme sports. The other features of this professional high definition lens include antireflection coating as well as high-index and low-dispersion optical glass. Every component in the construction of the Opteka high definition 0.20x is multicoated, and the high-speed autofocus minimizes the loss of time when capturing moments from crucial events.