Blue Colour Profile Problem

General topics about imaging

valerie sauve
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Posts: 1
Joined: Sun Jan 20, 2013 5:40 pm
Scanner: CanoScan 9000F and
Canon Pixma PRO-1
PhotoShop 5.1
SilverFast Product: Ai Studio

Blue Colour Profile Problem

Postby valerie sauve » Sun Jan 20, 2013 7:13 pm

I recently purchased a copy of SilverFast 8 ai Studio and a 5x7" IT8 Reflective Target to calibrate my CanoScan 9000F Scanner but i get very different looking colours in the SilverFast preview screen or from the Print Tao Screen than i do from the PhotoShop 5.1 screen or when printed using my Canon Pixma PRO-1 Printer. There is a very significant emphasising of the blues / Blacks - when scanning an image without much blue this is not nearly as noticeable though but still there. I am using a calibrated Apple iMac Screen and a calibrated printer / paper profile both done with an x-Rite Colour Munki Photo colourimeter. See the below Screen shot comparisons...

SilverFast Preview.jpg
SilverFast Preview Screen Shot
SilverFast Preview.jpg (80.31 KiB) Viewed 1114 times


PhotoShop Screen.jpg
PhotoShop Screen Shot
PhotoShop Screen.jpg (104.16 KiB) Viewed 1114 times


You might think that the PhotoShop images look better but they are a long way from the more subdued tones of the original... and way to saturated for the finished prints...

The SilverFast IT8 Calibration runs correctly and comes up with a DeltaE of 1.4-1.5 each time and stores the file correctly and PhotoShop finds the embedded ICC profile OK - I have tried 600, 1200, 2400, 3600 and 4800 dpi scans using either the Archive Print workflow or a manual one and saved the files (upto 2400 dpi) in both PSD and Tiff and loaded them into PhotoShop manually - nothing seems to affect the blue / black colour cast or over saturation of the image in PhotoShop whether i leave PhotoShop's working space as the embedded scanner profile or convert to ProPhoto RGB...

The prints match the PhotoShop screen images closely as you'd expect with a fully calibrated workflow but they look nothing like the originals i scanned...

Can you suggest what might be wrong...? I've gone through a whole box of paper and loads of ink trying to find out what is causing this problem...

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LSI_Ketelhohn
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Re: Blue Colour Profile Problem

Postby LSI_Ketelhohn » Tue Jan 22, 2013 3:33 pm

Dear customer,

How did you set the highlights and shadows?
Did you use the automatic or did you do it manually.

If you have not tried it manually I suggest you try the Pipette tool.
It allows you to define the brightest and darkest point in your scan.
Also the neutral pipette can remove any colorcast if used on a neutral area.
Many papers have a colorcast (yellow to blue depending on age) which can become visible to the scanner.
The neutral pipette is able to remove this.

kind regards,
Arne Ketelhohn.


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