I acquired a Summilux 35mm f/1.4, about 1978 issue. I've done some shooting with is on the M9 now, not enough as yet.
It's a very interesting lens: the character of the image it makes changes radically from wide open to two stops down. Wide open, it reminds me of a Zeiss Softar effect, only more subtle. A couple of stops down, it's beautifully sharp everywhere but not bitingly so ... there's a lovely quiet to its rendering even with everything pin-sharp.
I think I'm going to like it a lot, the rendering qualities are quite unique to my eye. It has the look of all the Mandler designs from that era, closest to the Summilux-R 50/1.4 and Summicron-R 90/2 of the other lenses I have.
On the M9, I see a small amount of color shifting across the field; I may not have chosen the best lens code for it yet. Anyone have any suggestions?