Originally posted by sb in ak I've been looking at the 645D lately as well as the price is approaching affordability. Though I'm having a hard time rationalizing it with the A7R II about the same price and the ability to adapt my Canon glass. I still want the 645D, but I'm wondering if that's silly. Half of it would be to start accumulating 645 lenses, though for that day I can afford the Z!
I was making the same determination earlier last year. I decided to go with the Nikon D810 and Zeiss Manual lenses. So far I have not regretted my decision. The availability of great glass and the flexibility of higher ISO performance helped me along the way. I still think I would have enjoyed the 645D, but I shoot a lot in low light and the Nikon has been kind to me in these circumstances. On a tripod the D810 is a great still life/macro and landscape camera.
Having said all of that I still miss my Pentax 6 x 7 and look forward to Pentax's continued success in this area. Lenses made the difference for me in the end. The D810 is not medium quality format, but it's pretty close for many applications.