Hi, everyone. I would to identify colors (fur colors, in this case, but I suppose that's not important) with greater precision that using color words, (eg. Rufus). Ideally, I'd use a spectrometer to find reflectance curves, but I don't have one, so I thought that using a digital camera would be the next best option. By comparing the RGB color values from a photograph to those of a piece of white paper, I can report the relationship of the three color channels to white paper, but is there a way I can determine the absolute reflectivity of the paper so I can report absolute values for the color channels? Thanks for the help.