In Michael's "Camera to Print" tutorial the point is effectively made that Prophoto RBG has a wider gamut than Adobe RBG and this translates into more information being available for prints. But I do not understand where Prophoto fits in the process. Is it used instead of Lightroom or Photoshop? Is it a RAW converter whose files are then exported to Lightroom or Photoshop?
Any guidance would be appreciated.
A couple of points... it's RGB vs. RBG. There are 3 main colorspaces for photo purposes (yes I know there are more but we'll leave it to 3 for the purposes of this thread).
sRGB - appropriate and used for web images.
Adobe RGB - general use or photos that don't have a wide color gamut.
ProPhoto RGB - photo printing or those images that have a wide color gamut.
You'll want to read Michael's article on LL [a href=\"http://www.luminous-landscape.com/tutorials/prophoto-rgb.shtml]Understanding Prophoto RGB[/url]
Lightroom uses Prophoto RGB by default with an sRGB tone curve. So as soon as you open a photo it will use the ProPhoto colorspace assuming you are shooting in RAW. If you are shooting JPEG (not for me... sorry) then it will use the colorspace determined by your camera (sRGB or Adobe) if the option exists.
In Photoshop goto Edit >> Color Settings >> set your Working Space for RGB to sRGB, Adobe RGB, or ProPhotoRGB (recommended).
So much more to say but Michael's article will be a good start.
Hope this helps.