1 – Lighter Test – This is one where the grain or lack there of is most evident, even in the JPEG. I know you have a lot of range to change color in post, but I also think the color rendition of the MX vs the M “out of the box” is also demonstrated here. The M has a definite greenish cast which is missing in the MX.

2 – 2000 iso Ext Night – I think the lack of noise in the MX vs M is only part of the story, though the difference is very dramatic between the two shots. I think the contrast in the MX is better in the M. The apparent sharpness also seems better in the MX vs the M. This is probably because there is less noise/grain on the MX vs the M. Per contrast, look closely at the windows on the right of the 1813 building. You can actually make out subtle differences in reflections in the MX shot which are lost on the M. I also think the color rendition looks better on the MX vs the M. That is just my personal opinion. BTW, this is a shot that, to me, is more dramatic in the moving example…especially for sharpness, contrast, and color rendition.

3 – EXT/DAY – 3 stops overexposed. It is a dramatic difference in over exposure latitude and the detail in the shoulder of the exposure curve. With the MX there is actually detail in the very over exposed areas that can be brought down in post to give you an exposure that is useable. The M sensor lacks the detail in those areas so when you bring it down you can really see the clipping of the sensor. The corrected footage gives the M sensor a very video feel where as the MX sensor has a much more filmic feel. Also, the MX is able to distinguish between the light toned building and the sky which the M is not able to do.