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Author Topic: Edit ICC Profile  (Read 1356 times)

smikkelmit22

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Edit ICC Profile
« on: February 19, 2021, 05:00:33 am »

Hi All,

I'm quite a newbie when it comes to color management. Normally I just scan my patches using I1profiler combined with a X-rite i1 Pro 3 (the RGB edition).

Now I have a new media. The colors look accurate, but I feel they are a bit to dark. I understand I can use my RIP or Photoshop to add some brightness. But I wanted to edit the ICC to do it permanently. If this is possible of course. Is there a software or another way to do this?

Thanks much and have a great day!
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JRSmit

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Re: Edit ICC Profile
« Reply #1 on: February 19, 2021, 05:29:42 am »

Hi All,

I'm quite a newbie when it comes to color management. Normally I just scan my patches using I1profiler combined with a X-rite i1 Pro 3 (the RGB edition).

Now I have a new media. The colors look accurate, but I feel they are a bit to dark. I understand I can use my RIP or Photoshop to add some brightness. But I wanted to edit the ICC to do it permanently. If this is possible of course. Is there a software or another way to do this?

Thanks much and have a great day!
Perhaps your monitor is too Bright?
Assuming you didcthe profiling correct, it should not be too dark.
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Rhossydd

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Re: Edit ICC Profile
« Reply #2 on: February 19, 2021, 07:23:07 am »

If your prints look too dark and you've built a profile with Profiler, it's far, FAR more likely to be an issue associated with monitor brightness and/or viewing light brightness.

Editing profiles, if you can even find the software to do it, is a job for exceptionally experienced colour experts and it is very, very rarely needed.
Best advice ? forget the idea.
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digitaldog

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Re: Edit ICC Profile
« Reply #3 on: February 19, 2021, 01:12:34 pm »

Editing ICC output profiles: NO!
As other's said, it might be the display. But...
You should always test output using good color reference images designed for that task. The color reference images RGB values are such they are set for output and are editing and display agnostic. Test the output this way and examine for the same color issues so we know it's not your image specific issues causing the problems:

http://www.digitaldog.net/files/2014PrinterTestFileFlat.tif.zip
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smikkelmit22

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Re: Edit ICC Profile
« Reply #4 on: February 20, 2021, 07:00:47 am »

Hi all,

This is great, thanks for the replies!

Ok, could be the monitor indeed. Best is to test what digitaldog stated.

Test the output this way and examine for the same color issues so we know it's not your image specific issues causing the problems

Should I do this with the human eye? Or can i use my pro3 tool to test it?

Thanks a million!
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digitaldog

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Re: Edit ICC Profile
« Reply #5 on: February 20, 2021, 09:09:03 am »

Eyes.
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wallyk

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Re: Edit ICC Profile
« Reply #6 on: February 20, 2021, 05:42:27 pm »

As a long time amateur and lurker here I am certainly no expert. I take the point about using the eyes for evaluation but surely if one wants to correct things one must use some numbers. As an exercise I have been trying to get a really good profile for my Epson R1900 printer( long on the tooth but a great reliable printer with zero clogs over its lifetime) and Costco Glossy paper. Using my own test file with a generous gray panel (127.127.127) The best I have got is a Delta E of 9. Further attempts at improving this (I1profile with IiPro2)-averaging three measurements (2033 patches),Optimizing, OBA correction, Room light measurement has resulted in a Delta E of over 16  ! Not very useful. What other things can I do or am I being unrealistic for this printer and paper?
A print of the DigitalDog test file gave the following results. Macbeth Colorchecker mid gray 182,160.160  deltaE 11.3 Skin tone 177.164.151 DeltaE 8.3 Underside of dog grey 186.204.209 delta E16.6
My screen is calibrated at 80 cda d55. measurement made using compare mode in BabelColor CR&A
Any comments would be welcomed
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