[ptx] 48 bit workflow

[Katherine Donaldson]

I'm trying to set up a 48 bit panorama workflow.  So far my process 
looks like this:

Capture a set of raw NEF's.
Use dcraw to convert to 24 bit and 48 bit PPMs.
Use ImageMagick to convert to 24 bit and 48 bit TIFFs.
Run Autopano-Sift 2.0 on the 24 bit images since it won't work properly 
on 48 bit.
Use Hugin to read in lens profile, tweak control points and optimize 
parameters.

Then I run into problems.  If I use Hugin to stitch (either PTStitcher 
or Nona) my 48 bit TIFFs I still end up with 24 bit output.  What can I 
do to get a 48 bit output panorama?

Thanks,
Katherine