Despite the sense that the lens was sent to us by extraterrestrials (or at least named by them), the 42.5 f1.2, OIS, aperture ring is a big announcement. It's definitely pro spec, and the Leica Badge is likely indicative of a bokehlicious lens design. I'm guessing it'll cost north of $1K US, so it's not likely to end up in my bag anytime soon. The Canon 85/1.2 is about $1900US. So throwing in an M43 discount, I'm going to guess a price around $1199. The OIS is an interesting move. I didn't expect OIS in this lens, and it makes me wonder if video guys are also interested in this lens for run-and-gun. For stills, I can see it allowing one to keep ISO a stop or two lower for posed portraits, by cheating and using a slower shutter speed than 1/90th. So you get about 2 stops of more use compared to the 45/1.8. For some that's worth it. The added DOF control will also be useful as one gets into half-body or full-body portraits. I'd still prefer the 135mm on FF for such things, but the convenience of being able to use one system starts to weigh in. I don't know when I'll ditch my Canon 5D3, but it's likely to be the last DSLR I buy. Panasonic announces Leica DG Nocticron 42.5mm F1.2 (again): Digital Photography Review And I've thought of a new standardized test question: Summilux is to Summicron, as Noctilux is to ___________.