Hi Marcus, Could you please start your own discussion on this topic? I think it's better not to mix different topics within one discussion. Thank you! 2011/10/20 Marcus Andersson <lucaf3rr@xxxxxxxxx> > Hi, > > I have a question regarding calibration. Is it really meaningful to > produce a .cal for an RGB printer with 8 colors? I don't know that much > about these things but theoretically a CMY linearization on such printers > would involve all eight colors, right? I am asking as a novice, thanks. > > Regards, > Marcus > > On October 20, 2011, at 10:01, Wim Hertog wrote: > > Hmm, so the profiling step alone should do the trick then? I thought > profiling only characterized the printer and you needed the calibration step > in order to actually change the printing behaviour. If the profiling step by > itself is enough to create prints matching my (with argyll) calibrated > monitor, I must be doing something wrong somewhere... > > After following the tutorial and profiling the printer the gamut shape and > softproof look perfect. Very similar to what I get from PM5. The printout > using this profile results in a horrible yellow-brown cast though. I follow > my usual workflow while printing: windows CM is turned off in the canon > driver and photoshop manages colours using the generated profile. I'm pretty > sure it's not double profiling anywhere. > > I must be doing something wrong somewhere but I literally read the tutorial > a 100 times and tried everything and always get the same result: a strong > yellow brown cast together with totally blocked shadows. > > Anyone has any idea what's happening or....a link to another tutorial to > double check? > > Wim > > > 2011/10/20 Graeme Gill <graeme@xxxxxxxxxxxxx> > >> Wim Hertog wrote: >> > Now, the above workflow results in some strange outcomes: the colours of >> > the softproof in photoshop are completely off (the same happens when I >> > convert to above generated icc file). The image prints ok (ok doesn't >> > mean as good as I want though), nothing like the softproof shows. >> > However, when I don't add the .cal file to the icm (last step), the >> > softproof is perfect but the actual printed image is horribly wrong >> As suggested in the tutorial, get just profiling working first. There >> are too many variable otherwise, and the first thing you do in diagnosing >> a problem is break things down into individual steps anyway. >> >> Graeme Gill. >> >> > >