Message
Re: [colorvision_group] Re: Profiling epson color laser
2008-07-02 by CDTobie@aol.com
In a message dated 7/2/08 2:33:05 PM, ferdylau@... writes:
If you think the color adj is the right way to go, the created
profile with extremely small color gamut (get too much gamut warning
when soft-proof a CMYK test image, as compared to Hp color laser)
should be correct. I just can't understand why the gamut of the
canned profile has the same size as sRGB.
Please analyze your profile by printing the SpyderProof Matrix image from SpyderProof, then print it again from Photoshop (in the second instance by using the Matrix image in the Test Image folder in our application's folder). The two should have the same gamut if you are configuring your Photoshop printing correctly. Use Saturation Intent, no Black Point Compensation in Photoshop, and Saturation intent in SpyderProof. Then, once these two match, compare them to a print made through your canned profile of the same image. Compare gamuts not with software tools, but by comparing how bright the most saturated colors in the Matrix test image are. Are they more saturated in the canned profile image? Then there is something wrong with how your profiling targets are being printed (limiting the available gamut for custom profiling), or our colors would be just as saturated, or a bit more so.
If our results are as bright or brighter than the canned profile, then the issue is with your software profile comparison methods. Do not trust gamut comparison tools, they don't show you the colors, they just tell you what the profile is telling them, and it may not be telling the truth. The colors are the ultimate test, not some software analysis.
C. David Tobie
WW Product Technology Manager
Digital Imaging & Home Theater
Datacolor
CDTobie@...
www.datacolor.com/Spyder3
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