Re: Mac Leopard profile issue.
Re: Mac Leopard profile issue.
- Subject: Re: Mac Leopard profile issue.
- From: Steve Upton <email@hidden>
- Date: Wed, 30 Apr 2008 23:38:04 -0700
At 2:50 PM -0700 4/30/08, J. Craig Sweat wrote:
>I am new to this list but not to color management. My apologies if I breach some protocol. I have been very successful with making paper profiles with an i1 spectrophotometer for my Epson 7600. It has done as advertised- reduced my tests/wastage and calibrated several studio monitors regularly. All of my current profiles were built from and for a system 10.4(+) Mac. I bought a new 8-processor (system 10.5 + current updates) Intel Mac and imported the paper profiles from the 10.4 machine and they produce prints with darker shadow areas (blocked-up, really) when I print with the same profiles but from the new machine. Mid-tones and highlights are close but the shadows and blacks seem stretched down too dark and the print is correspondingly more contrasty. In concept the promise of a calibrated, closed-loop workflow like i am describing should have consistent results from the same profile. Unless the printer driver (or the OS?) has changed the way it uses the profile. The prospect of creating multiple profiles for each paper/printer combo to suit each workstation becomes an impractical time-eater. Does anyone have any insight or similar experience?
we've seen this occurring with some of our ColorValet customers.
Open the ColorSync Utility and find your printer under 'Devices'. Set 'Generic RGB' for the profile for your printer. Make sure you set it for the particular paper type you are profiling (and selecting in the print driver when you print).
Also, set the printer as the default printer in Leopard's printer setup tool.
THEN try printing your target, it should work OK.
A good way to confirm the problem (and the fix) is plot the measurements in ColorThink (if you are a user) and plot the Generic RGB profile along with it. If you see all the measurements are inside the Generic RGB gamut then you are seeing the problem... When you successfully turn off color management the colors will appear well outside the gRGB gamut.
If you are not certain, feel free to send me the measurement file offline and I'll take a look.
Kudos to our color tech Pat Herold for figuring this one out.
Regards,
Steve
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o Steve Upton CHROMiX www.chromix.com
o (hueman) 866.CHROMiX
o CHROMiX Maxwell live May 14. All your color, anywhere.
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