Thank you Joe. This is what I am thinking:
I am looking to find a Phase One IQ1 40MP Digital Back but not sure if its compatible with the H bodies.
I was also thinking of just getting the H5D-50 and Not look into Phase one back to H body .
Any suggestions please advise. I want to see whats the Best for the money. Thank you
IQ the same? AF I need accurate so I am NOT sure if the Phase one DF+ and the IQ1 40 and 80mm lens is the way to go.
Thank you Mainly Portraits and travel camera
I have no experience with the H system, so I can not answer any of your questions. I do know that many portrait shooters love the skin tones on the H backs, but you have to use Phocus, which no one likes. Also, the focus on the H system was always better then on the DF+. Compared to the XF, I would guess they are the same.
On Phase One, the DF+ is pretty crappy overall. It was a temporary solution when all of the systems started going proprietary and Phase One was left out to dry. P1 did not originally have a camera body, just digital backs, and they bought out Mamiya, quickly converting one of their medium format bodies to work with their backs. It is not a well thought out system; the XF is though. The DF+ also uses a different battery design than the back, so you will need to have two different types of batteries. The XF uses the same style of battery as the back.
Personally I use an IQ260 on an Arca Swiss RM3Di and, occasionally, the M2. My wife uses an IQ260 on the XF; she shoots food and packaging. I say this just so you know where I am coming from. When she upgraded from the DF+ to the XF, she found it to be leap and bounds better. However, neither of us shoot fast moving objects or work handheld, so I am just going off of when we fooled around with our systems but did not do anything serious.