There are fast lenses, and then there are FAST lenses. The Voigtländer Nokton 17.5mm f/0.95 definitely falls into the latter category. In fact, at f/0.95, it ties with a few other lenses, including its 25mm Micro 4/3 brother, as the fastest lens currently produced for an interchangeable lens camera. Faster lenses have been made, but they have…