[Scribus] How do I do color correction

avox avox
Wed Mar 7 00:22:22 CET 2007




Hal V. Engel wrote:
> 
> ...  It is easy and inexpensive to create custom profiles for your
> scanners 
> and cameras.  For flat bed scanners all you need is an ($15 + shipping)  
> IT8.7/2 target from Wolf Faust, LProf or ArgyllCMS (Lprof is easier to use 
> and both are open source and free), and a few minutes to scan the IT8/7.2 
> target and process it into a high quality custom profile.  Both pieces of 
> software will create world class input device profiles.  If correctly
> created 
> these custom profiles will definitely be better than using sRGB for your 
> scanner.  As an example raw processed images from my DSLR have a gamut
> that 
> is almost twice as large as sRGB at almost 70% of CIELab.  There is no way 
> that I could use sRGB for this device and not either loose (clip) or 
> misrepresent almost half of the devices available gamut.  I should also
> point 
> out that the IT8.7/2 target itself actually has a gamut that is larger
> than 
> the sRGB gamut and most scanners will be able to capture the full gamut of 
> the target.
> 

What I dont understand is why it's not possible to print out some test page,
scan that with your calibrated scanner and create a custom profile from
that?

/Andreas
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