Hi rider04 and welcome to Discussions,
MDI files are Microsoft Office Document Imaging - a proprietary MS format
that I believe they were trying to get accepted in favour of PDF format -
it's a similar sort of philosophy, except that where PDF works on just about
every platform available, MDI only works in Office for Windows, v2003 and
higher (in fact, the MDI print driver appears to have been removed from
Office 2007). They are far more than " Microsoft's version of the .tiff
format".
Unfortunately, there are no ways to read these docs on a mac - even the
venerable GraphicConverter can't handle them. Can't you get your
correspondents to send the data in another format? Almost nobody I know uses
MDI. If they are scanned paper documents, then TIFF4 or PDF are far better
(and more widely available) alternatives.
Regards
Stefan
