RE: Color cast when printing
RE: Color cast when printing
- Subject: RE: Color cast when printing
- From: Daniel Salazar <email@hidden>
- Date: Tue, 06 Jan 2009 11:07:17 +0100
Hi Roger
After some days of reading what you and a user at the Apple Support Forum wrote and after reading a lot about ColorSync and Color Management I found that my problem wasn't exactly a problem with my settings. I found after comparing the profiles, either on Aperture or Photoshop or ColorSync Utility, and also printing a lot, that the problem was a specific paper type and size produced by HP.
I do believe, due to what I also read at the HP Forum, when selecting the HP Advance 10x15 cm the printer applies a yellow cast. Why? I don't know.
Now when I use a diferent paper or even the above mentioned one, and of course the profiles I created by my self, I just have to take care not selecting HP Advance as paper type. When I do that, this yellow color cast is not applied.
I really appretiate the help you gave me and also the members of the list who also wrote.
Many thanks
Daniel
Am Sonntag 21 Dezember 2008 um 09:08PM schrieb "Roger Breton" <email@hidden>:
>Daniel,
>
>Your situation is not easy to tell from a distance.
>
>> I got a Spyder3Print and already profiled some paper I have.
>
>Spyder3Print? Maybe C.D.Tobie could help as I'm not up to speed on this
>ColorVision product :(
>
>> I decided to try then with a picture of my son laying on the snow. I
>> proof the profile on screen and looked perfect, however when I try to
>> print the picture, then choosing the profile (Aperture is managing the
>> color) on the ColorSync Profile list I saw that the picture on the
>> preview acquired a yellow color cast.
>
>I am not familiar with Aperture but the color shift maybe a sign that
>Aperture does not color manage the Preview? Much the same way Photoshop
>pre-CS3 did not.
>
>> I also did the same trying with Photoshop Elements and happened the
>> same.
>
>Again, it's possible that both applications just pass the preview image to
>the system unmanaged.
>
>> Just when I try on PSE and the printer is managing the color, the
>> pictures is perfect.
>
>This tells me that when the printer is managing color and the pictures are
>perfect, the printer driver is carrying the correct color conversion, from,
>say, sRGB or your custom monitor profile to your Spyder3Print printer
>profile. You need ti discover, exactly, which chain of conversions, which
>profiles are being concatenated, by the print driver. So that you can turn
>around and do the same in Aperture or PSE when Aperture or PSE manage the
>colors.
>
>> In Aperture the results when the printer is
>> managing the colors is similar as when Aperture manage them.
>
>Which is encouraging because that's the behavior you want, in a way. Which
>does not seem the case when you do the same in PSE.
>
>> It is important to mention that previous to decide that the printer is
>> managing the colors, on the ColorSync Utility I changed the profile to
>> the printer under devices.
>
>Boy! Is there a way you could afford to *not* use color conversions
>happening at system level? Not that I don't trust ColorSync workflow but, if
>I was you, I would want to manage the color conversions myself, that way I
>have a chance of following what is going on.
>
>> I really do not know what is happening, at the begging I though it was
>> the paper, I though that the paper distributed here in Switzerland by
>> HP would have some variations to the one they used when creating the
>> profile, now when I created my own profiles I really do not know.
>
>Daniel, could you experiment with color converting your files, in TIFF
>perhaps, completely outside either Aperture or PSE? I was thinking using
>the ColorSync utility or through some ColorSync scripts (do these still
>exist in OSX I'll admit that's been a while since I had to hunt or use
>them). But color converting in the ColorSync environment will give you the
>definitive answer.
>
>Another route you could take is download a free CMS utility like Argyll
>(www.argyllcms.com) and execute the profile conversions at the command line?
>That may prove challenging at first but you would not, once and for all,
>without the shadow of a doubt, what to expect from your Spyder3Print printer
>profiles. Then you could use Argyll's output to benchmark Aperture or PSE.
>
>Just curious, did you disable any color management in Aperture or PSE when
>you first printed Spyder3Print testcharts?
>
>Just a crazy thought ...
>
>MfG / Roger
>
>
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