Hi,
Cost does matter to a lot of people. Honestly the 645Z is within my budget limit the IQ-250 is not. I set my budget limit around 13000$US including some lenses. I bought my P45+ when I found a good back at 10000$US (actually 9900, just to be honest). I spent a bit more on lenses than planned, of course.
The way I see it, Pentax is an integrated camera with the FP shutter as main issue. A slow FP shutter has long X-synced exposure times so it will not work well with outdoor flash in many cases, and shutter may cause problems. Also if you need removable back, go somewhere else.
Hasselblad is well integrated, but with a removable back. The major weakness is that it does not have live view. A nice thing with Hasselblad is that they are in charge of the entire system. Also, Hasselblad has some smart stuff like the HTS 1.5, that is integrated in Phocus.
Phase One has live view. A major advantage.
To that comes that the CMOS cameras are crop 1.3 (to full frame 645). Also when on a technical camera, they will not work well with Schneider wide angles, because of the beam angle. In many cases CCD based cameras are a better choice as they at least for now have less crop factor and less issues with beam angle.
I won't buy any of these, I am quite happy with my P45+, in spite of the systems limitations.
Also, I may be wrong but I see a Sony A9 on the horizon, 54 MP and next generation EVF. That camera with a few nice Zeiss lenses and a Mirex T&S adapter for my V-series lenses complemented with the Canon 17 and 24 T&S lenses may be the ultimate solution for me.
Or, I just stay with what I have and spend my money on travel. Alternatively, I may save for an 8K projector coming in 5-6 years that can show the pixels I already have. Full HD (1080) -> 2MP, 4K -> 8MP and 8K -> 32 MP.
Best regards
Erik
Pentax seems to put DSLR technology into the MF camera.
Also:
The thread title is Pentax 645X vs Phase One vs Hasselblad.
Where are the comments about Hasselblad?
And why is it only a price debate?
I must say I was shocked when I saw the test images from the Pentax 645 II. Maybe they hired bad photographers to introduce their camera - or the look is really this terrible. I prefer my 5DIII to this.