This rare 1970s fisheye lens is believed to be the most extreme wide-angle optic ever produced. Officially called the Fisheye-Nikkor 6mm f/2.8, this lens was first shown to the public at the Photokina trade show in Cologne, Germany, in 1970. It weighs a whopping 5.2 kg, is 171 mm long, and has a diameter of 236 mm, boasting a field of view of 220º; it can literally see behind itself! Priced at £100,000 ($160,000), it is available at Grays of Westminster in London, UK.
Photo Credit: Tony Hurst
