For those on Mac's instead of trying to re-linearize K7 .quad files which is hard to do,
go the ICC route. Just create a custom grayscale ICC built on top of the existing .quad file.
Then print using this ICC. It has the same affect as relinearizing the curve plus you get the
color-management system matching the embedded profile in your image. This is
the best/ideal way to get screen-to-print matching assuming you are profiling your monitor.
Note that you really have to use Print-Tool on the Mac to get this all to work correctly.
The MeasureTool issue is still a pain -- I run Parallels on the Mac with WinXP running so
I run MT on that.
PCs can do this too but you've got to do your ICC conversions in Photoshop before
sending to QTRgui for printing. (most people seem to go the No CM route on PCs I think).
Roy