Printing incorrect color on picture modified with Selective Color

JS
Posted By
J.S.King
Jun 23, 2004
Views
364
Replies
5
Status
Closed
In Photoshop 7 I had a photo taken with flash that the whites were very ‘yellow’. After printing it I decided to make alterations.
Using ‘Selective Color’ I succeeded in converting my yellows to a satisfactory ‘white’. This alteration I saved as a separate filename.
When I chose to print the new file, the results were exactly as they had been when I first printed the original.
Have you any ideas please why this may be?
My printer is an HP810C with a new color cartridge.
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RW
Rene_Walling
Jun 23, 2004
HOw are you determining that the whiotes are satisfactory? By looking at your screen, or by looking at the colour values?

If the former, is your screen calibrated and profiled?

If the latter, what profile are you using and do you have the fcorrect profile for your printer.

Also (and I know this is a stupid question, but I’ve caught people with it) is the paper a yellowy white?
JS
J.S.King
Jun 25, 2004
Thanks for your time.
It is the difference on the screen (which is considerable)that I have used, the colour valued don’t mean much to me.

I did not know I had to calibrate or profile my screen.

For a long time now when I open a file I get a window "The document has and embedded color profile that does not match the current RGB working space" then I have 3 options to choose.
My embedded profile is ‘sRGB’ my working profile is ‘Adobe RGB’. Comments on which is best for me would be appreciated.

I wasn’t aware the printer had a ‘correct’ profile. Mine is an HP Deskjet 810C, I wil re-read the manual.

No my paper is virginal, unlike it’s user.
L
LenHewitt
Jun 25, 2004
JSK,

Take 15 minutes out to read through the excellent tutorials at http://www.computer-darkroom.com on colour management. Then come back and ask any questions you still have.
RW
Rene_Walling
Jun 25, 2004
It’s a good iodea to familiarize yourself with colour values:

In RGB mode, pure white is 255 Red, 255 Green and 255 Blue If you have something more like 255 Red, 255 Green and 230 Blue, then you don’t have white, you have a light yellow

I did not know I had to calibrate or profile my screen.

If you don’t, then you can’t know if your screen is showing you the correct colour or not. In this case, it probably doesn’t.

I wasn’t aware the printer had a ‘correct’ profile.

Every printer has it’s own profiles, and the profiles for one printer isn’t good for a different machine. Even every type of paper on your printer will have different profiles.
JS
J.S.King
Jun 27, 2004
Thank you both for your feedback – there is a lot to learn!

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