Inside there is a two page instruction manual, not that I actually stopped to read it first. But while I was loading the pictures to TypePad, I figured it seemed like a good idea to take a ever so brief look so I would know what I was talking about. Interestingly, the Manual warns NOT to attach filters between the lens-hood and the lens, instead there is a filter tread inside the lens-hood. BTW filter size 58mm. Hmm off to Samy's Camera to see if they have a 58mm B+W UV-IR in stock.
This is one seriously big window. I was shooting downstairs in low mixed light from the window and indoor lighting and had no problems with the shutter speed at all. Seen from the rear the glass is exactly as big as I can imagine it possible to fit into the M mount.
* The lens fit and work perfectly on my M6 and M8, however just like the Noctilux it is to big for the Leica CL and cover the rangefinder window almost entirely, it is actually possible to focus it with a little good will, I would NOT recommend this lens for a CL or CLE user.
Ahhh, maybe just one more image, the source file is tack sharp around the eyes and the front hair, as you can tell it defocuses quickly and smoothly. this is very nice, image shown here have not been adjusted for contrast.
Steve Huff have the first meaningful side by side comparison of the Nokton and the Leica Noctilux f.1 which is what the Nokton really is aiming at. click to read Steve's Blog post.
Tom aka Etruscello posted his thoughts on the Voigtlander 50mm 1.1 on LUF, he is comparing it to his Noct. He feel the lens may have a bit of backfocus issue and posted very detailed instructions for dealing with this. Personally I have not noted a back focus issue with this lens, but I have also not done in depth testing for this. So far Tom is the only user I know about to make this observation, so at this point I will not say that it is a general problems for the 50mm 1.1, however I have no doubt that the lens will backfocus a bit with you stop down to 2.8, Im only saying that what I have seen is dead on wide open, and that is what I got the lens for anyway.