heinzx; I got my first Noct around 1993, so I'm familiar with it. Found it so difficult, if not impossible - to focus accurately, that I more or less regarded it as unusable. Got a renewed interest for it when I got my M9 2010 - rangefinder system identical w/M6 . . BUT, the opportunity to check the shots immediately made a big difference. The ultimate difference however, showed when I got my first NEX-7 two years ago, with the brilliant peaking function. This changed my shooting so much that after a year I sold the M9. I must admit that I sometimes miss it - the sensor is still the best in the market & I hate the magenta discoloring I get on wide angle shots on NEX & A7r. I'm also doubtful - sometimes - about my exchanging the Noct 1,0 with the 0,95. The latter is a fabulous lens, but every now and then I miss the wonderful bokeh & artistic vignetting of the 1,0. Regards, Odd Geir.
aperture (had once a Noctilux 1:1,0 on a M6) - bravo !