Fisheye Lens 180 degree with macro FeaturesJollystar Optics 58mm 0.25x lens is a fisheye conversion lens that attaches to the front of an existing lens,. It can also be used as a 12.5x Macro lens, by unscrewing the back element, and using that part on its own. Specifications Magnification 0 .25x Rear Mount Diameter 58mm Front Diameter 67mm Construction, Elements/Groups 3E/3G Lens Diameter 55mm Length 30mm In photography, a fisheye conversion lens is a wide-angle lens that takes in an extremely wide, hemispherical image. Originally developed for use in meteorology to study cloud formation and called "whole-sky lenses", fisheye conversion lens quickly became popular in general photography for their unique, distorted appearance. fisheye conversion lens are often used by photographers shooting broad landscapes to suggest the curve of the Earth. Hemispherical photography is used for various scientific purposes to study plant canopy geometry and to calculate near-ground solar radiation

58mm 0.25X fisheye lens for camcorder / camera