Luminous Landscape Forum

Raw & Post Processing, Printing => Colour Management => Topic started by: vanderloo on April 28, 2019, 04:48:08 pm

Title: How will I know how out of gamut colors will print?
Post by: vanderloo on April 28, 2019, 04:48:08 pm

When proofing in Photoshop in a ProPhoto rgb workspace, after having set the printer and paper profiles and made my adjustments, I have quite a bit of The main bright colors in the image showing as out of gamut when Gamut Warning is checked.
Not wanting to guess and waste ink and paper, Is there a comprehensive gauge I can use to determine how these colors will print?
Thank You

Title: Re: How will I know how out of gamut colors will print?
Post by: digitaldog on April 28, 2019, 04:50:30 pm

In a nutshell, ignore the out of gamut overlay. It's buggy. It's not terribly useful. It predates soft proofing that's far better for a visual idea of how the image will print. The output profiles will handle out of gamut mapping faster, more precisely:

The Out Of Gamut Overlay in Photoshop and Lightroom
In this 25 minute video, I'll cover everything you need to know about the Out Of Gamut (OOG) overlay in Photoshop and Lightroom. You'll see why, with a rare exception, you can ignore this very old feature and still deal with out of gamut colors using modern color management tools.

YouTube: https://www.youtube.com/watch?v=00O-GTDyL0w (https://www.youtube.com/watch?v=00O-GTDyL0w)
High resolution: http://digitaldog.net/files/OOG_Video.mp4 (http://digitaldog.net/files/OOG_Video.mp4)

Title: Re: How will I know how out of gamut colors will print?
Post by: Mark D Segal on April 28, 2019, 05:15:24 pm

Further to Andrew's correct advice just above, if you are not familiar with how to softproof in Photoshop, the attached illustration may help. Go to View>Proof Set-up>Custom and the Customize Proof Condition dialog will open. In "Device to Simulate" select your printer/paper profile. Leave Preserve RGB numbers unchecked. For Rendering Intent, choose the one you will be printing with and check Black Point Compensation where allowed. Also check Simulate Paper Color. I suggest saving those setting as a Preset using a name identifying what condition it is simulating. Then click OK. This condition toggles on or off using CMD/CTRL (Mac/Windows) Y. When active you will have a good appreciation of what will come out of the printer, provided your monitor is properly calibrated and profiled. For monitor calibration, if you are working in dim surrounding light, I recommend a brightness setting in the range of 100~110. This helps cohere the screen appearance with the reflected light you will see off of the print and protects you from making the print too dark.

(edited for typos, 18:23)

Title: Re: How will I know how out of gamut colors will print?
Post by: vanderloo on April 28, 2019, 06:10:43 pm

Very Helpful guys.
Thank You