Couldn't find a Platform SDK or GDI+ forum so I'm posting this here:

Any information on handling images of type "PixelFormat48bppRGB" in GDI+ The documentation claims that the 16-bit channels are actually represented as 13-bit colors internally i.e. each color channel ranging from 1 to 2^13. I've confirmed this by loading black and white 16-bit color images and determining the color channels are clamped to a range of 0 to 8192. Is this industry standard, or is it just a Windows thing What happens when I save my images again, are they remapped to the original 16-bit range and saved, or just saved in their 0-8192 internal representation Documentation is a little lean regarding this. Thanks everyone!

This forum is dedicated to the Visual C++ IDE. For question about graphics programming using GDI+ you will have a better chance to get an answer in the MSDN Newsgroups:

http://msdn.microsoft.com/newsgroups/default.aspx dg=microsoft.public.win32.programmer.gdi&lang=en&cr=US