RE: Color cast when printing
RE: Color cast when printing
- Subject: RE: Color cast when printing
- From: Roger Breton <email@hidden>
- Date: Sun, 21 Dec 2008 15:08:04 -0500
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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