Full disclosure: my company sells Phase One and not Hasselblad.
There is exactly one answer to this question: do the test yourself and decide what you see.
FWIW here are downloadable files from a Phase One P45+H (same sensor as an H3D-39 - different electronics, firmware, UI, software etc) with a Phase One 120mm D Macro Lens and a Hasselblad HC120mm lens. Note the difference in diffraction response between the two lenses. I do not have shots from this test at wide open since this test was to illustrated how different optics often respond differently at higher aperture numbers.
Phase One 120mm D vs. HC 120mm D (diffraction)Here is my off-the-top-of-my-head list of fast glass available for Phase One and for Hasselblad.
Usable Shallow DOF lenses with a Phase One back on a Hassy H bodyHasselblad HC 80mm f/2.8
Hasselblad HC 100mm f/2.2
Hasselblad HC 210mm f/4
Hasselbald HC 300mm f/4.5
Usable Shallow DOF lenses with a Phase One back on a Phase One or Mamiya bodyHasselblad FE110 f/2 (via easy to use adapter)
Mamiya 80mm f/1.9 (MF)
Phase One 80mm D f/2.8
Schneider 80mm D LS f/2.8
Schneider 110mm D LS /f2.8
(not shipping yet)Phase One 150mm D f/2.8
Phase One 120mm D f/4 (MF)
Mamiya 150mm f/4 soft focus portrait lens (MF)
Mamiya 300mm f/2.8 (12 ft focus distance w/o extension tubes)
Usable Shallow DOF lenses with a Hasselblad back on a Hasselblad bodyHasselblad HC 80mm f/2.8
Hasselblad HC 100mm f/2.2
Hasselblad HC 210mm f/4
Hasselbald HC 300mm f/4.5
PLEASE chime in and add to the list.
I'm biased of course but my favorite shallow depth of field lens is the Phase One 150mm D f/2.8. On a DF body the focus is spot on, wicked sharp, and beautiful out of focus areas. The HC110mm/2.2 would be my second favorite. The FE100/2 lens is legendary but I've never had the pleasure of shooting with it myself.
If you're making the large investment of a medium format system I'd strongly suggest you also give a Phase One or Leaf dealer the opportunity to show you the advantages and disadvantages of those systems.* Make sure to evaluate workflow from start to finish, as you'll only get the best out of digital back if you process using the manufacturer's software - and there are some very large differences between Phase One's Capture One software and Hasselblad's Phocus software. Also check out the warranties, support policies, rental availability, upgrade paths (can you upgrade just the back or just the body or is it only possible to upgrade the entire kit), and what is involved in renting or buying a backup/replacement body should you need to (does the body have to be locked to the back at the factory or can you get one off-the-shelf), and the advantages/disadvantages of the philosophies of an open or closed system.
*I would say the same thing to anyone just looking at Phase One or Leaf that they would doing themselves a disservice not to look at the advantages/disadvantages of Hasselblad.
Doug Peterson
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