On May 8, 2013, at 3:07 PM, Spinnaker Photo Imaging Center <spinnakerphotoimagingcenter@dnmillerphoto.com> wrote:
Also, N8 patch is equivalent to a patch in the 24 patch target?
GAH! Did I really type, N8? Yes, I did.... Sorry, I meant to type "N5," meaning the patch with that Munsell color, which is the one next to the yellow patch. And there's another caveat...the proper RGB values depend on the working space's gamma. In most working spaces, the gamma is 2.2 and the proper RGB values are R=G=B=118. But ProPhoto uses a 1.8 gamma (which is one of the many problems with it as a working space), and there you need to use R=G=B=100. You can figure out the proper RGB values for any color space by using the color picker in Photoshop. Either create or convert or assign a document to that space and then use the color picker to set the color to L=50, a=0, b=0 and see what the RGB values are. Cheers, b&