This is the ZM1.4/35\'s result.
Unlike contax G lenses, ZM1.4/35 is the latest released lens for digital, so it must be designed taking the Leica M9\'s 0.8mm thick glass into account.
Therefore in this simulation, I set the cover glass\'s thickness to 2.55-0.8 = 1.75mm.
Result shows 2m will be good for stock A7, but still f1.4 seems to be difficult to get usable sharpness.