Take about fast lenses and paper thin Depth Of Field! An ad leak from a French photography magazine-Chasseur d'images has revealed three ultra fast lenses from Leica. The German finest glass maker is more likely to update the legendary Leica 50mm F1.0 M Noctilux at the upcoming Photokina with a new 50mm F0.95 Noctilux ASPH. An F-stop on a par with the Canon 60s’s vintage 50mm F0.95. If the DOF gets any narrower, you will not be able to pin down the focusing point.