I have a son due next month and I plan (for a while) to move more away from my passion for collecting (mostly) 35mm rangefinder cameras and lenses and back to taking photos (where I started!). I've found in the past that a 35mm SLR + 50mm F1.2 + fast film + natural light makes an excellent combination for photographing children at home. I own the Canon 50mm F1.2 in LTM and while it's a fantastic lens and I love it, I would be the first to admit it's not up to par with modern SLR super-speed lenses for critical work when used at its fastest settings. My budget would allow me to purchase a used Nikon 50mm F1.2 AIS or a Konica Hexanon 57mm F1.2. I once borrowed Nikkor 50/1.2 AIS on an F body and was deeply impressed by its quality wide-open (amazed in fact), but I don't have any experience with the Konica 57/1.2, although I do own some slower Konica lenses and have always admired the quality of the results they produce. The Konica 57/1.2 seems to come in black or chrome ringed versions and I was wondering what the differences were optically if any. There is a gentleman named Weber who is hawking restored versions of these lenses, at steeper prices than usual, but perhaps they are worth it since he claims to refurbish them well. The other super-speed I might consider would be a Pentax for K mount, based on the awesome results I've had from Pentax SLR lenses in the past. Any thoughts or experiences to relate are welcome!