On Tuesday 07 September 2004 12:53, Stefan Döhla wrote: snip > > I think using Windows based profilers are fine if you are profiling > > scanners, cameras and printers for Linux as long as you do all of the > > image IO in Linux using the same drivers and setting that you will be > > using normally. I have done this for my printer and my scanner using > > Profile Prism with good results. > > You can profile everything with Win32 for any OS. But only if the > drivers do not come with extra stuff for "better color reproduction by > automatism". > So if your Win-driver does send raw-colors to your printer just like > Linux, they are valid. What you could do is (see below for more > comments on this): Scan/Print the test targets using Linux and use > ProfileMaker (comments below!) to analyze the results (tiff or > printout) on Win32/Mac.
Well that is my point. I don't think my Windows Epson 1280 driver sends raw data to the printer and I am sure that the GIMP Print drivers do not. After all what are all of those settings for if they don't change what goes to the printer? This does depend on the drivers and some drivers may always send raw data to the printer but I know that many do not. For example I am using VueScan on both Windows and Linux and I am sure that it does the same thing in both environments. Wait, doesn't VueScan sit on top of SANE in Linux? So it may be close but I can not count on it. Just like I would not use a profile that was built using the twain driver from the scanner vendor with VueScan in Windows. There is software doing things to the image between the raw scan and the final output and the software is different and likely does different things to the image. I think the same thing is true for video drivers and for many printer drivers particularly those for inkjet printers. snip > Valid profiles can be made with argyll (for the brave!) or the old > lprof under Linux. The lprof profile I generated does look to be OK when I look at the results using qtmeasurementtool. Now all I need is tools that will use it in Linux. > And all Win32-profilers should work as well. I > don't know about Mac profilers, but they should work if you use a > gamma of 2.2. > I have reservations about this. Depending on your hardware and the drivers it may be close enough but how do you know? Hal V. Engel
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