Check gamut

[WATERMELON]

GIMP Version: 2.8.22
Operating System: Mac OS
GIMP Experience: New User

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Hi

I am creating the inside label for my t-shirt line and the printing company is saying that colors are out of gamut. They couldn't provide any information on how can I check my designs gamut in Gimp (Photoshop only).

Would you please help me find how can I check the gamut for a design in Gimp? I've attached the label as an example.

Thank you.

[Wallace]

GIMP Version: 2.8.22
Operating System: Mac OS
GIMP Experience: New User

---

Hi

I am creating the inside label for my t-shirt line and the printing company is saying that colors are out of gamut. They couldn't provide any information on how can I check my designs gamut in Gimp (Photoshop only).

Would you please help me find how can I check the gamut for a design in Gimp? I've attached the label as an example.

Thank you.

I'm not sure if this link bellow,will be of any help to you.

Gamut Warnings and What to Do About Them

fixgamut-huesat.pdf

(1.17 MiB) Downloaded 140 times

The label isn't really the most important part of a garment.

Perhaps you can go with a simple black and white label,
with the background being white and other elements black?

[WATERMELON]

Hi

Thank you for the link and pdf.
When I've opened an image (says"open a copy of an image"), then I added layer mask and Selection to Alpha, and after click View, it doesn't show the option "Gamut warning".
"1. Open a copy of your image.
2. Choose View -> Gamut Warning.
All pixels that fall outside of that particular profileʼs gamut will be highlighted."

Actually a garment label is an essential part of communication with the customer, and grey is the top color recommended by the printers. I wanted to introduce brand colors, that's why I keep searching for solutions.

Thank you again for your replay and have a beautiful evening!

[rich2005]

I did a whole rundown using Gimp 2.10 before noticing OP is using Gimp 2.8

@ WATERMELON The printing company will be using a specific color profile something.icc You need to find out what they are using. If you know the name most can be downloaded from the internet.

EDIT: oops, missed a probable required preliminary

View menu -> Display Filters: Add Colour Proof to the Active filters



If you open the image and go to Edit -> Preferences -> Color Management
Start off with:
1. Mode Of Operation: No management - this is what you will probably see when editing
2. The CMYK icc profile that the printing company uses.
3. Change the out of gamut colors to something that stands out



4. Now change Mode of Operation to Print Simulation.



In CMYK bright colours, blues and greens become muted. Nothing you can do about this.
Gimp is a RGB editor and really you should be using a CMYK editor such as Krita. However a useful site (free) to convert RGB to CMYK is (of course) https://www.rgb2cmyk.org/

[Chris_x]

I found this helpful,^^ thank you and can't fault it

when I was learning the soft proofing I didn't realise that photographic digital printing uses the RGB colour space thinking it would be CMYK as there are CMYK cartridges in desktop printers

this I find helpful also

https://prophotosupply.com/blogs/resour ... nd-fiction



I am still using gimp 2.8 for soft proofing as I understand 8-bit, bit depth is the way to go as the printers are calibrated for it,16 max and I am confident using the luminosity mask on 2.8; bit of a learning curve for 2.10 for soft proofing and luminosity masks; I'm sure they both work well.

I have found when soft proofing for photographic printing that shadow detail goes out of gamut and one of the ways to fix this effectively is to use the DDD luminosity mask:

https://patdavid.net/2013/11/getting-ar ... ity-masks/

viewtopic.php?f=9&t=17815