The Fisheye-Nikkor 6mm f/2.8 lens, first produced
in 1970 at the Photokina trade show in Cologne, is a 220º fisheye Nikkor
with an astonishing speed of f/2.8. It is the world’s most extreme
wide-angle lens to cover the 24 x 36mm image area (at the time) with a
massive glass dome which dwarfs the camera attached. The lens officially
went into production in 1972 and uses 12 glass elements in nine groups
with a total weight of 5.2kg. The extremely wide-angle lens from Nikkor
is available via graysofwestminster for £100,000 GBP (approximately $161,000USD).