Message
Re: [colorvision_group] Re: Checking up on Printfix Pro
2007-11-02 by CDTobie@aol.com
In a message dated 11/2/07 2:46:42 PM, brston73@... writes:
I wonder, would it be possible to provide a profile testing image with
readable patches matching the colors in the test image, so that one
could evaluate a profile. This would be especially useful in
evaulating papers.
The targets, and the measurements you already make to profile them; or the profiles you build from them, is all that you need for paper comparisons. I check the black L* value, and the RGB a*b* values to compare two papers profiled on the same printer with the same inks, or do a visual gamut comparison. This can be done in the free ColorSync Utility, but I tend to use ColorThink Pro, which is not free, but is crossplatform.
As for a measurable test image; I measure ramps and graph them in Excel for testing, but its a Geek thing, not an end user thing. I don't use my profiles to print color ramps, I use them to print challenging images. Some of the most useful of those challenging images have been included in the SpyderProof test image matrix, for end users to chech highlights, gradients, shadow detail, saturation, neutrality, etc. Each image, and what its useful for on screen and in print, is detailed in the SpyderProof help. SpyderProof is included in the new Spyder3Print application, which all PrintFIX PRO users can upgrade to for free. The display-only version of SpyderProof is also included in the Spyder3 display calibration applications (Elite and Pro).
C. David Tobie
Product Technology Manager
Digital Color Solutions
Datacolor
CDTobie@...
www.spyder3.com
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