Originally posted by Miguel Re: color space & Raw, the in camera setting is irrelevant. But you then have to choose a color space for final output. sRGB has a smaller gamut than AdobeRGB which in turn has a smaller gamut than ProPhoto. It is better to work downward from the latter and then export in the appropriate color space to the requirements. sRGB for the web and outsourced printing; AdobeRGB for home printing if your monitor and printer can handle it. ProPhoto as a baseline working space.
M
Using ProPhoto RGB for any PP after the raw converter only makes sense if you do your edits in 16bit resolution. A wider gamut means that (in 8bit mode) for a given image you will be using less of the 256 steps you have in each channel (R, G, B), so you are more likely to get posterisation effects--that is, visible steps rather than smooth gradients. This should not be a problem in 16bit mode. I always convert my raw files to 16bit mode and do all of my editing in 16bit. For normal images without very saturated colours I use Adobe RGB, for very saturated colours ProPhoto RGB.