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RE: [colorvision_group] Re: Help!

2006-11-05 by Mike Johnson

I remeasured the target, and everything went fine. However, I then
printed the provided test image, doing the four quadrant method and
changing the rendering intents for each image. Each of the images
states a different intent, i.e. saturation, percetual, etc. All four
images look identical in color, tone, saturation, etc. Is this
correct?


I think it depends on how good your ink and paper are; the better they are
the smaller the difference.

Absolute Colorimeteric has a different white point to the others, so the
light tones may look blue compared to the other 3, but it depends on how
yellow your paper is.

The 2 Colorimeteric intents assume infinite brightness range, so shadow
detail may be lost. Saturation and Perceptual assume a limited brightness
range which should preserve the shadow detail. On the full photodisc image
the top right has lots of dark objects, but its not printed by PrintFIX PRO.
There is a dark object below the hand, an elephant, I can see slightly more
detail in the Perceptual and Saturation prints.

I think I can see a slight difference in colour of the leather case between
Saturation and Perceptual, but its not significant. On the full photodisc
image I can see a difference in the colour of the printed circuit board.

Mike

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