To be honest, no, but I've used the 645 DF+ with Schneider Kreuznach 80mm LS F2,8 Lens and IQ250 back with Capture One 8 etc.
well' the 645 DF+ body is surely different than the new XF... that improve some ergonomic aspects and finally have a detachable viewfinder like H body had since years 2000, the seismic sensor is a good think and the more accurate and fast AF is surely improved i don't know if IQ350 have big differences than the 250.
So So I've tested it, but not used for months... At the end I've concluded that the 50c and IQ250 respectively produces the same results, IQ had warmer tone than 50c that's all.
Price wise the Phase solution to me was too expensive that's why I've decided to go straight with Hasselblad, I was an H4D-40 owner and Phase offered me a very good exchange price to go on their system... but then I have to re buy lenses, and some one don't even exist... (HCD 24mm, HCD 35-90, HC 100mm F2.2, HC 300, HTS 1.5 etc..)
One solution for me is to change the H5D-50c with a H5X with IQ250 / IQ350 but I didn't find the advantage (especially price / result wise) .
That's my situation Dough, any idea ?
Best regards, Domenico.