Thanks for all the great feedback folks. It's a challenge to be sure. Most of my problem seems to be in setting the white and black points so my image is a good match. I'm happy with the color, but not the tonal range. What works almost perfectly for the Color Checker doesn't cut it with the painting. I'm thinking the CC patches approach a perfect, diffuse reflection, so it looks the same almost regardless of the angle and lighting. The paintings have a lot of direct reflection, shine, sheen, texture, etc, so the viewing angle and lighting make a big difference in how they look. I was hoping my cross polarized lighting would solve it. It did to a significant degree, but not completely. I'm trying to learn myself, but also trying to help a friend who took dozens of art photos with a similar setup. Unfortunately, the actual artwork is 1000 miles away, so he can't tweak to match visually. I was trying to use a "by the numbers" approach as much as possible, to reduce his reliance on memory or feel to adjust his images. John, you may be right that I didn't have my polarizers perfectly cross polarized. Also, my custom profile was made without the polarizers. Wayne, I think your comment colorimetric reproduction on a monitor is part of the issue. Roger, yes I have taken outdoor shots, with and without a polarizing filter. I got much better results with the polarizer. Still have the same black point issue. Ben…Yikes! I think you are right, but that's more than I am willing to tackle. I wouldn't be surprised if my light gray studio walls are causing light to reflect back causing flare, even with the polarizers. I'm going to try another test using a back backdrop to reduce extraneous light. All this good feedback is much appreciated!! Lou