Thank you for all the great responses. I have learned a lot. Bottom line is that I am processing my B and W images on a well calibrated monitor and have the image exactly where I want it in terms of "neutrality". The Canon printer wants to add color and changes my image in the hard proof. I can deal with that. My question at this time is, when viewing the print with some sort of color cast that I do not want, how to I identify and quantify the type of color cast? Example green or magenta is sometimes very difficult to see depending on what light you are viewing it in due to metamerism. If II could quantitatively identify the cast I would think I could just add an adjustment layer of the opposite color and strength on the color wheel to neutralize it. Am I in the ballpark here?