Pentax 645D vs Phase One P40+ at Luminous

The Pentax 645D action continues with a duel, a duel posted at Luminous Landscape where two photographers square off the Pentax 645D with the Phase One P40+ digital back with the DF medium format camera body. Yes, this is a proper pixel-peep-a-thon, brick walls are included! We won't reveal the conclusions here, which may (or may not) surprise you...