Like most fisheye, Fisheye-Nikkor 8mm f / 2.8 covers a field of 180° and gives, on the film, a circular image. The lens has been highly appreciated by panoramists in the past. This non-Ai lens version was produced between 1970 and 1977. Pano image was made with 4 photos. Fun to use, but the new fisheyes are much better, even fisheye for $ 400.