Hello Graeme, well, in that case I'm also tempted to try both ways and to compare the results. This will probably be the best thing to do. If I'm right, there are 3 possible combinations: 1. Calculate a default output printer profile using ICC-specified conditions as D50, 2 deg. observer 2. Calcilate a output printer profile using my new Heaven 42 based illuminant and FWA compensation 3. Calculating a new, proofing paper based illuminant and applying it along with FWA compensation to a new output profile. Or woud you suggest further combinations? Regards Vladimir Am 15.02.2012 um 00:39 schrieb Graeme Gill <graeme@xxxxxxxxxxxxx>: > Vladimir Gajic wrote: > >> What is not quite clear to me, >> ist the output profile for my proofer. There I use a paper wich has a >> very small amount of FWA. Should I: >> >> - Calculate a "default" ICC-profile using D50 or >> - Calculate a ICC-profile using my calculated illuminant? Should in >> that cas the -f swich be used too? > > If the paper really has little FWA, then either should work. For consistency > I'd be tempted to use the FAW approach for it as well, including measuring > an illuminant spectrum for it using illumread, but this may be > unnecessary work. > > Graeme Gill. >