Originally posted by ftpaddict Difference between f/1 and f/0.95 is worth exactly diddly squat.
Actually, Leica had to do this to equal the Canon 50/0.95 rangefinder lens produced by Canon in 1961. There's plenty of those still in use, many converted to Leica M mount, used with the Leica digital rangefinder, and commanding very high prices on the second-hand market. Depth-of-field that narrow is an acquired taste, but they certainly produce a unique look. And the chances are that the Leica is usably sharp at f/0.95.
Come on, admit it. If Pentax made a 50/0.95 we'd be all over it like a pit bull on a pork roast!