On 01/31/14 05:05, uga...@talktalk.net wrote:
> You cannot actively colour manage a workflow unless you have colour
> calibrated your monitor.
I understand that, and have that on my list of things to get done.
> Also, you do not say if you are printing to Epson Premium Glossy Photo Paper,
> nor do you say
> what profile/media settings you have selected in the printer driver.
Epson premium glossy paper user, selected in the driver
> The default RGB space has to be something if colour management is active.
true, but not necessarily used.
> However, it is unlikely yourdigital photographs will use this colour space.
As far as my own images go, I'm starting from raw, so the color space is
whatever I export with the image from ufraw.
> ProPhoto RGB, is a wide colour gamut, developed by Kodak.
> It much wider than sRGB and is also sometimes called ROMM RGB.
Didn't realize at first that ROMM RGB was another name for ProPhoto;
found that subsequently, thanks.
What I don't understand is this:
I have physical prints from cone color on Epson premium glossy photo paper,
printed with conecolor k3 inks which were designed specifically to be a
very close match for epson ultrachrome k3 inks.
Regardless of what the image looks like on screen,
if I import the image and keep its embedded profile,
then print it using the appropriate profile for the printer + paper + ink,
I should get an image that closely matches the professionally supplied
I'm not; it's got too much yellow in the skin tones.
In the gutenprint print dialog, under the "Output" tab, by default it has
the following settings:
Color Correction: Default
Image Type: Mixed Text and Graphics
I set Image Type to "Photograph", but left Color Correction alone.
If I set Color Correction to "High Accuracy" I see no difference.
> -----Original Message-----
> From: Gary Aitken <g...@dreamchaser.org>
> To: firstname.lastname@example.org <email@example.com>
> Sent: Thu, 30 Jan 2014 21:22
> Subject: [Gimp-user] color proofing / printing -- profiles not applied when
> printing? gutenprint plugin
> Hi all,
> I recently installed an epson 3880 and am trying to get decent color out of
> I'm relatively new at this and may have more than one thing wrong.
> At the moment I am using the outback photo printer evaluation image as a test,
> since it has rather large color bars and swatches to compare:
> I have my Color Management preferences set as follows:
> Mode of operation: Color managed display
> RGB Profile: sRGB IEC61966-2.1
> CMYK profile: None
> Monitor profile: NEW MultiSync LCD 1970NX
> Display rendering intent: Perceptual
> Print simulation profile: Epson Stylus Pro 3880_3890
> Softproof rendering intent: Perceptual
> Mark out of gamut colors
> File Open behaviour: Ask what to do
> The test image has an embedded profile, "ProPhoto RGB", which I chose to keep
> when I loaded it in. It shows under "Image"/"Image Properties"/"Color
> as "ProPhoto RGB Reference Output Medium Metric(ROMM). I don't know what
> the "Reference Output Medium Metric" means...
> With color management disabled in the display filters dialog
> ("View"/"Display Filters"/"Color Display Filters")
> the image on-screen appears darker and less saturated, with reds too orange
> and blues too violet.
> With color management enabled the image looks bright and highly saturated,
> although the saturated green-yellow and green patches become difficult to
> distinguish. I suspect that is an out-of-gamut situation, but not sure.
> The photographic images in the test image become much brighter and
> If I also enable "Color Proof", things get muted a bit, particularly in the
> test patches, although changes in the actual photographic images on-screen
> are much more subtle.
> Questions related to viewing on the display:
> Assuming the incoming image is "correct" with its attached color profile:
> 1. Checking only "Color Management"
> Is this "the best / most accurate we can do on this display"?
> 2. Checking only "Color Proof"
> What does this represent? Is it a rendering of the image mapped to
> RGB and then color-corrected for the printer, and therefore incorrect?
> Is any display color-correction included in this?
> 3. Checking both "Color Management" and "Color Proof"
> Is this the proper way to preview an image for printing?
> 4. This dialog is labelled "Display Filters". I am assuming that means
> items selected here *only* affect how the display appears, and has
> nothing to do with printing. Correct?
> The images being printed appear similar to what I see on the screen with
> "Color Management" unchecked, and "Color Proof" unchecked:
> When printed, the most saturated reds appear dull and orangeish
> The image has three saturated greens, clearly distinguished in unmanaged
> mode on-screen, but with two of them difficult to distinguish in managed
> mode on-screen. The prints have the clearly distinguishable green
> pattern seen in the unmanaged image on-screen.
> In unmanaged mode on-screen, the blues tend towards violet, which is
> what they do when printed.
> CMY are all less saturated unmanaged on-screen, and printed.
> In the gutenprint plugin, the printer command being issued is
> lp -s -d 'Epson_Stylus_Pro_3880' -oraw
> I also have the test image from Cone Color
> and the two test prints they supply which are supposed to be color-corrected
> and should match epson inks very closely.
> If I use the Cone Color test image and compare the output to the sample
> cone-color k3 ink sample, there is clearly too much yellow in the skin-tones.
> Any help / hints would be greatly appreciated.
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