There is only one 50mm f/1.0 lens in production today. It is the legendary Leica f/1.0 Noctilux, which is also the fastest rangefinder lens IN THE WORLD. Cue Tenacious D. You can pick a Noctilux up new for, oh, about $6,000. But you’ll need an M-series Leica to pair it with. Another 50mm f/1.0 lens … Continue reading 50mm at f/1.0, Yo. – Shoot The Blog