Huge 11-Pound Nikon 6mm ƒ2.8 Fisheye Lens Goes On Sale | Cult of Mac
Lensfinder.com - Ultra Rare Nikkor 6mm f/5.6. Only a few hundred of these lenses exist. This lens has a 220 degree field of view for Full Frame 24x36mm sensors. Made in Japan
Lens pr0n: The Nikkor 6mm f/2.8 fisheye monster | TechCrunch