I feel that Zeiss have given ip on the ZM line which is a shame. I would like high quality lenses which Zeiss produce at thaeir standard price pionts. ZM 35mm F1.4 less than 1/2 price of Leica. Bob M. The 35mm FL I feel is fully covered by the M mount manufactures. VC 35mm f2 is going to nail it for that FL and aperature for a state of the art optical far less than Leica prices.
MS OPTICAL NO longer doing coversions I understand. Skyalley is doing some at a price. Lens element separation and fungus/haze with age, been there not a great experience. MS optical make lenses which are very fast, light and small. But an 50mm F1.05 with 7 elements, only yhat aperature at infinity and more like f1.3 close up..!
Looking at the 50mm f0.95 TTartisian lens but. Reading the reviews collating the gen huuum. 6% complex distortion, very hard to nail the focus not at all helped by a ~100 degree focus throw. This shows some odd thinking construction design of the lens the lens design.