Re Df DR (and noise)
Not the greatest image, but an example to post for noise and DR. This is straight out of cam via C1, NO added processing for color, contrast, sharpening or NR, basically straight out of cam as shot with AWB. It is taken inside a very dark bar in Genoa, NV, hand-held using my 28/1.4, 1/30 @ f2.8 at ISO 5000:
C1 exposure evaluation suggested it was 0.3 stops underexposed. I pushed it 2 full stops for an effective ISO 20,000(!), with the same (no) settings as above. Here is a crop of the old boot in the shadow of the buffalo at effective ISO 20,000:
Yes it's noisy to nearly unusable at pixel level, but color and DR hold surprisingly well IMHO, and shows how good this sensor is at low light. I could no doubt improve this image significantly with some careful processing and NR application, but that wasn't the point and this image isn't worth the effort