Photographers can create intriguing effects with a wide depth of field using the Canon EF Fisheye Lens. This Canon Lens has a 180-degree angle of view using a short minimum focusing distance of eight inches for close-up shots with special effects. Working with a 15 mm f/2.8 lens provides many unique and interesting effects; however, the Canon EF Fisheye Lens stays sharp and clear throughout the entire focus range. When working with the ultra-wide 180-degree angle of view, photographers can capture scenes well beyond their natural field of vision. This Canon Lens has up to three gel filters that can be inserted into its built-in rear filter hood, with a fixed petal-type hood. Included with the Canon Lens are also internal focusing, five diaphragm blades, and the capability to work with 35 mm film or digital cameras. The 15 mm f/2.8 lens construction is that of eight elements in seven groups, and the focus adjustment allows for an overall linear extension system with AFD. To sum, the photographer looking to work with a lens meant for wide angels and special effects will find this Canon Lens to be a fully equipped fisheye lens.