Here are Raw files for a daylight photo I took with the same Noctilux lens on both cameras at 1/350s f8 fixed daylight white balance.
Observations in LR 4.4RC:
– M has much warmer tone than M9. Facing the real scene I would say that M9 is closer to reality than M is.
– M looks less prone to moiré
– M has more resolution due to its 24Mpix sensor
– M produces a smoother and cleaner image than M9 which shows more jaggy contours.