The black Olympus 9mm f/8.0 Fisheye Body Cap Lens is a unique body cap that contains a fisheye lens. This body cap lens serves as protection for your camera's sensor and other internal parts as well as providing a 9mm fisheye for getting very wide-angle images. The lens features a constant f/8 aperture and a 35mm equivalent focal length of 18mm.
For maintaining good image quality with an ultra wide-angle lens, there are two aspherical elements designed to reduce spherical aberrations and distortion. Although the fisheye lens does provide a unique perspective with its 140° angle of view.
The lens does offer manual focus for capturing subjects as close as 7.9". Also, this lens is lightweight at just 1.1 ounces.