Using GIMP: Correcting and Touching Up Your Images - GIMP 2.6 for Photographers: Image Editing with Open Source Software - page 52

per channel. The JPEG file format saves images at 8-bit color depth per channel.
The example images in this section were produced with UFRaw stand-alone.
Moreover, UFRaw offers a batch mode (available for the Linux platform;
to obtain information about this feature, enter main ufraw or ufraw—help in
the Linux console).
The main UFRaw window is designed so that the various working
commands are displayed in the sequence in which they will be applied to the
image. You can open an image in UFRaw and experiment with the options to
see how they affect your image.
Figure 2.1
An unedited digital negative was just opened in UFRaw's preview window. The left panes show color histograms and setting options.