The Epson V850 scanner I just received came with x-rite color management software for scanner profiles. What's it used for? How do you use it? Is it worthwhile? The unit also has the Epsonscan software and Silverfast SE software. I normally shoot color transparencies like Velvia 50 and had been using Epsonscan previously with my V600 to scan medium format. Now I'm shooting 4x5 as well, hence the need for the V850. Thanks. Alan.