Color management issue with ET8550 please help

[lev]

Print preview is faking you: you can see a strange color cast if you load the profile. But it will print OK. I get this when print preview pops up:

This is the picture in PS

View attachment 16685

When I load my profile and start print preview:

View attachment 16686

The print preview gives me a reddish glow on the picture (skin tone of the lady):

View attachment 16687

In the end it prints perfectly OK: nothing to worry about this.

Unbelievable!!

You are absolutely right! You saved who knows how many days of trouble! thanks

But how come ProPhoro RGB shows much much brighter color on screen than on print? Is this because ProPhoto RGB gamut is way wider than CMYK?

 

[pharmacist]

Yes it is: so just forget what you see in print preview. It is the printing that counts. ProPhoto RGB can never be printed, every printer/ink/paper/media setting combination has a much smaller gamut. Color management is just a method to translate the supposedly should-be color towards a smaller gamut output device, in this case your printer/ink/paper/media setting combination in the most agreable method, in which out of gamut colors are translated to the nearest color your output device can generate. It also will try to change the corresponding nearby colors that can be reproduced in such a way the outcome is agreable to the eye, otherwise you will get strange color ramps (this method is called the perceptual intent: it changes the colors, that can be reproduced otherwise without problems, but are nevertheless corrected so the visually agreable relation to the colors that can NOT be reproduced is maintained in the most acceptable way.

Sometimes all the colors can be reproduced by the output device: in this case the relative colorimetric method is the preferred rendering intent, because all the colors that are displayed can be reproduced by your output device.

That is in a nutshell the purpose of color management, in this case using printer profiles.

 

[lev]

Yes it is: so just forget what you see in print preview. It is the printing that counts. ProPhoto RGB can never be printed, every printer/ink/paper/media setting combination has a much smaller gamut. Color management is just a method to translate the supposedly should-be color towards a smaller gamut output device, in this case your printer/ink/paper/media setting combination in the most agreable method, in which out of gamut colors are translated to the nearest color your output device can generate. It also will try to change the corresponding nearby colors that can be reproduced in such a way the outcome is agreable to the eye, otherwise you will get strange color ramps (this method is called the perceptual intent: it changes the colors, that can be reproduced otherwise without problems, but are nevertheless corrected so the visually agreable relation to the colors that can NOT be reproduced is maintained in the most acceptable way.

Sometimes all the colors can be reproduced by the output device: in this case the relative colorimetric method is the preferred rendering intent, because all the colors that are displayed can be reproduced by your output device.

That is in a nutshell the purpose of color management, in this case using printer profiles.

Well, I mostly gonna use ProPhoto RGB because almost all my photos are in Lightroom where there is no other color space to work with. That is why I'm "worried" that my photos from Lightroom will be printed out incorrectly. In my previous results I was getting reddish prints from lightroom. After successful results from Photoshop I've printed out a photo from Lightroom using Epson Glossy profile with no color enhancement set in the print driver and Glossy paper profile and Relative intent set in Lightoom print settings - results are very good now. I didn't test Perceptual yet but as you said it should be even more accurate considering the fact that my L8180 has way less color gamut than ProPhoto does. Interesting if this is dependent on what you are printing?

 

[pharmacist]

ProPhoto RGB is a fictional color space that even high camera's are not using: they use either sRGB or AdobeRGB. AdobeRGB is the largest color space most real life pictures are to be displayed in. Even high high screens (Eizo) can hardly disply 100% of the AdobeRGB color range. So my question is: what do you want to achieve with ProPhotoRGB, which is certainly no profile that you use to print your picture, that will certainly gives you strange colors. Using softproofing with your printer profile gives you a pretty good. How the heck Lightroom should use ProPhoto RGB ??? It can perfectly use printer profiles provided by Epson. Anyhow: there are plenty of online documentation about color management you can read onlin and ProPhoto RGB is not a color space you are going to work in for real life pictures.

 

[lev]

ProPhoto RGB is a fictional color space that even high camera's are not using: they use either sRGB or AdobeRGB. AdobeRGB is the largest color space most real life pictures are to be displayed in. Even high high screens (Eizo) can hardly disply 100% of the AdobeRGB color range. So my question is: what do you want to achieve with ProPhotoRGB, which is certainly no profile that you use to print your picture, that will certainly gives you strange colors. Using softproofing with your printer profile gives you a pretty good. How the heck Lightroom should use ProPhoto RGB ??? It can perfectly use printer profiles provided by Epson. Anyhow: there are plenty of online documentation about color management you can read onlin and ProPhoto RGB is not a color space you are going to work in for real life pictures.

From DOCS:


Adobe Lightroom primarily uses the Adobe RGB (1998) color space for most of its modules, such as Library, Map, Book, Slideshow, Print, and Web. This color space is larger than sRGB and includes most of the colors that digital cameras can capture, making it a good choice for printing and further editing in other software1.

In the Develop module, Lightroom uses the ProPhoto RGB color space by default. ProPhoto RGB is the largest color space available and includes all the colors that digital cameras can capture, which is ideal for editing images1.


What I wanted to say is that when I edit photos in lightroom, I actually see ProPhoto RGB color space, which has a wider color gamut than my printer, then I use print module where all printer profiles are available. I didn't say that Lightroom uses ProPhoto RGB for printing