When editing the
raw files) with Nikon's ViewNX 2 software, after modifying things like exposure and white balance, I have the ability to save the
NEF file or "Save As" a new filename. Apparently I have to do one or the other before converting to TIFF/JPEG to open with an external program like Photoshop.
If I chose to Save the changes I make to a NEF file in ViewNX 2, am I permanently altering the original data? That is, am I just saving the new selections I made and I can re-edit and change my selections in the future, or am I actually altering the
raw data itself, perhaps in some way which I cannot later undo?