Hasselblad X1D + Hasselblad XCD 45/3.2 SHOOTOUT vs Nikon D810 + Zeiss 35/1.4: Flowers with 4-stop Underexposure + Push
Gross underexposure is obviously not the goal of any photographer except that a high dynamic range image by definition results in gross underexposure of dark areas. It is these areas that suffer the most and are thus the most limiting to image quality.
The prior comparison at base ISO looked at the best possible results with the best possible ETTR exposure. But what about gross underexposure? Which is the case in the dark shadow areas any time one shoots a high dynamic range scene.
Includes images up to full resolution and several large crops, RawDigger histograms, Adobe Camera Raw settings along with comments on the processing required. One of the crops shows RGB plus red/green/blue color channels from the ProPhotoRGB color space, showing that one of them is substantially more noisy.