The big negative for me is the fact that you can only use Mamiya lenses with it
On my ZD I also use (the very nice) schneider kreuznach and zeiss jena lenses (both p6 mount). For 100mm and up you can get a zörk adapter with tilt and shift that uses the schneider and rodenstock LF and enlagerlenses, wich are very good too.
To bad that there is no wider shiftlens - or any wider lens at all of good quality. I have not seen the promised 28mm mamiya lens appear (and one dealer told me that he doesnt expect to see it this year).
I think for some types of work, the ZD is very good to perfect (but certainly not for fast-shooters). For my work I find the ZD very suitable, shooting interiors and mostly using the lenses nearly wide open. the focus-confirmation light in the ZD helps a lot to nail the focus even with the 1.9/80mm. Any of the alpha, cambo-wide et al would be of no use here.
The dynamic range and the ability to retain highlight-detail are phantastic - and so are the colors.
the mamiya software is useless for converting images - but fine for thethered-shooting, as it always get´s the white balance right, which is important if clients look over your shoulder ( and I dont like to explain to the client that "yes, the pic is green, but it wont be like that in the final picture" all the time).
the only thing about the ZD that realy bothers me, is the fragil firewire-connection.
another plus: I have never seen an error-message on the ZD.
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