First produced in 1970 for the Photokina trade show in Cologne, Germany, Nikon’s Nikkor 6mm f/2.8 Lens was crowned “the world’s most extreme angle lens”. Able to shoot 220º thanks to a massive glass dome that’ll dwarf almost any camera you attach to it, the astonishing lens was only available on special order so it’s unsurprising there are few of them around today, never mind in perfect condition. Taking months to track down, specialists Grays Of Westminster now at last got their hands on the product, on offer with the original slip-on lens cap and for sales with a ruggest metal case. It carries a price tag of £100,000, but then this is a piece of photographic history.