Graeme Thanks for your answers to my previous email, may I follow up? I shoot Raw so the source profile is set in the raw converter. Lightroom uses a colour space called Melissa RGB which I understand has the gamut of ProPhotoRGB but with a sRGB gamma curve. If I -redo the screen profile with Melissa RGB as the source icc -use Melissa RGB as the source icc for the printer profile Would that make sense given that my aim is to get (as close as possible) a visual match between screen and printer. Most of my photography is nature photography so I suspect at some point I will have colours that are out of gamut for screen and printer. Thanks Eric CLSA CLEAN & GREEN: Please consider our environment before printing this email. The content of this communication is subject to CLSA Legal and Regulatory Notices These can be viewed at https://www.clsa.com/disclaimer.html or sent to you upon request.