Leitz Summicron 1:2/40 on EOS RP

padam19 wrote:

olstrup wrote:

Purple shift was seen on the first Sony A7X cameras but not the latest - and likely not on Canon R and Nikon Z cameras neither. What can still be seen is corner smear with some - but not all - rangefinder WA lenses. It is also seen with some of the newer 35 and 50mm Leica M lenses but not with the older non asph 35 and 50mm lenses (type IV and earlier). Please note that corner softness wide open with non asph lenses is not necessarily corner smear due to the sensor stack but an inherent characteristic of non asph lenses.
--
"Sharpness is a bourgeois concept." (Henri Cartier-Bresson)

https://www.dpreview.com/forums/post/61826473

I know all about that, and with the lens I have the purple shift on the R is there unfortunately (not with A7s, which I also have), just like with others, so I am looking to find one that does not have this problem, and this lens seems to be one of them, if the RP and R behave the exact same way, which hasn't been compared yet.

I'm surprised to hear that. I thought the new Canikon ML cameras was better than the Sony cameras in that respect due to a thinner sensor stack but I may be wrong. Which lens is giving purple color shift on your R? The usual suspects are Leica M lenses wider than 35mm - though there are exceptions (the WATE is one which works OK). The version III of the CV 15mm (both with M and E mount) was specifically designed to avoid color shifts and smearing on Sony A7X cameras