Nikon is one of the world’s most respected camera brands and a go-to in the photography world for professional and amateurs alike. Nikon specializes in some of the highest end optical lens on the market. In 1970 Nikon produced the Nikkor 6mm f/2.8 lens, known as the “most extreme fisheye lens,” weighing 5200 grams and possessing the ability to take a picture at a staggering angle of 220 degrees. This extreme angle allows the Nikkor 6mm f/2.8 to capture images from behind itself.