It's odd because I'd never imagine you making such strong conclusions about noise, or sharpness with such minimal testing.
I dare to do that based on that I know it's the same sensor, and that a CMOS which has digital output rather than analog like CCD is much less affected by surrounding electronics.
But it's just a fun experiment with a test software only I have. The general photographer can't and wouldn't convert Hasselblad and Pentax files into IQ250 files, and of these three cameras only the IQ250 can be used with Capture One. I think Capture One is a very important link in the great color rendition reputation Phase One has.
Even if these three cameras have the
exact same color response, the raw converter softwares are different and color profiles are different so results will be different. So Phase One don't need to worry just yet
.
This experiment is a "what if" experiment showing what would happen if all these cameras had the same raw converter and color profiles. And the indication I have is that it will then render very similar results (which is the expectation when knowing about the hardware), but you're right that it's early to come to the safe conclusion, shooting all three cameras on a large color checker under the same light and do measurements on that would be required to draw safe conclusions.
To be perfectly honest what I see is good color, as I don't have a reference file from an IQ250 shot at the same place I cannot know for sure if the IQ250 would render the same scene with good color in a radically different way, I just find that unlikely.
At some point I hope someone will actually make side-by-side shooting and provide raw files so I can convert them all to IIQ (open them in RawTherapee and use same profiles will also work) so one can directly compare how the hardware performs. There's a bunch of mythology around the superiority of Phase One
hardware some true some less so, and this type of test would be revealing in that aspect. However for
real use it makes little difference and you need to take the whole pipeline into account. It will be Pentax + Lightroom(?) vs IQ250 + Capture One vs Hasselblad + Phocus/Lightroom. And I think for portrait style of work that Capture One will have an edge. And of course we have the lens parameter too, which I'm uncertain about how much effect it has.