Using GIMP without losing colour depth
Posted Apr 18, 2012 5:00 UTC (Wed) by rgmoore
In reply to: Using GIMP without losing colour depth
Parent article: Natterer: Goat Invasion in GIMP
I've never heard of 24 bits per channel, but 16 bits per channel is what most photographers would like to use these days, and 32 bit floating point per channel seems to be common for HDR images. While 8 bits per channel with a gamma curve may be fine for display purposes, it's not good enough for editing. Applying a strong contrast correction to 8 bit per channel data will result in really ugly posterization or (if you try to correct for it) obvious dithering. You want more bits of color depth than your capture device can provide so any round-off errors will be of noise rather than signal.
to post comments)