Hi Andrew,
The ZD does use a proprietary raw file format whose extension is .mef.
As far as I konw, the converters able to deal with that format are:
- the Mamiya own raw conversion software (version 1.3 soon to be released for Mac binary),
- Lightroom Beta 4.1 and ACR3.6,
- Silkypix 3.0 on both Intel and Mac Universal,
- RAW Developper 1.6 on Mac only,
- DC Raw
There have been rumours that Capture One v4.x might also support the ZD as part of the deal between Phase and Mamiya.
Today, most people use either Silkypix or Raw Developper it seems.
I might be able to send you a raw sample some time next week. You'll have to give me your email address privately though. Each file is about 37 MB, can your email provider deal with that?
Cheers,
Bernard