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C
Chris.S
Inspiring
March 15, 2023
Answered

No Profile Mismatch between "image P3" vs "Display P3"?

  • March 15, 2023
  • 4 replies
  • 2103 views

Why does Photoshop treat image P3 and Display P3 as the same when it comes to the Profile Mismatch warning? Or, to put another way, why doesn't Photoshop flag a mismatch when opening an image tagged with image P3 when the Working RGB space in the Color Settings is set with Display P3, or vice versa?

 

Method to Recreate:

1. Create 3 files tagged w/ 3 different P3 profiles: image P3, Display P3 and DCI-P3 (as the control) and save.

2. Set the Working RGB Space in the Color Settings to image P3 and ensure Ask when Opening is selected under Profile Mismatches.

3. Open each file and observe the warnings.

4. Repeat steps 2 & 3 twice, substituting the other two profiles under step 2 accordingly, changing nothing else.

 

Result:

When Working RGB Space is:

DCI-P3 » image P3 & Display P3 mismatch warning; DCI-P3 √OK

image P3 » image P3 √OK; Display P3 √OK?, DCI-P3 mismatch warning

Display P3 » image P3 √OK?; Display P3 √OK, DCI-P3 mismatch warning

 

Screen shots of 3 settings attached, along with the images themselves. Tested on MacOS Ventura with both Photoshop 2022 and 2023 with various file formats and all produced the same result. 

This topic has been closed for replies.
Correct answer D Fosse

There are different preset "modes" you can set for the display in MacOS, equivalent to calibration targets when you use a calibrator. But the standard general purpose setting would be D65, which is also the white point in Image P3.

 

The primaries are in any case identical, and both use the special sRGB IEC61966-2.1 tone response curve (not a regular gamma function). So in most practical scenarios, they will be identical.

 

Originally, DCI-P3 is a standard for digital cinema projectors, and Display P3/Image P3 is a modified adaptation for use on computer displays. The original DCI-P3 has a greener white point.

 

In any case, it might be peripheral point, but I still think it's worth being aware of: a workflow relying on these two profiles is basically not color managed. Worth keeping in the back of your head. It will always look fine inside an Apple ecosystem, but you could get in trouble when moving outside it.

4 replies

C
Chris.SAuthor
Inspiring
March 16, 2023
quote

In any case, it might be peripheral point, but I still think it's worth being aware of: a workflow relying on these two profiles is basically not color managed. Worth keeping in the back of your head. It will always look fine inside an Apple ecosystem, but you could get in trouble when moving outside it.

 

Understood... these particular images aren't intented to leave "our" ecosystem. 😉

D Fosse
Community Expert
D FosseCommunity ExpertCorrect answer
Community Expert
March 16, 2023

There are different preset "modes" you can set for the display in MacOS, equivalent to calibration targets when you use a calibrator. But the standard general purpose setting would be D65, which is also the white point in Image P3.

 

The primaries are in any case identical, and both use the special sRGB IEC61966-2.1 tone response curve (not a regular gamma function). So in most practical scenarios, they will be identical.

 

Originally, DCI-P3 is a standard for digital cinema projectors, and Display P3/Image P3 is a modified adaptation for use on computer displays. The original DCI-P3 has a greener white point.

 

In any case, it might be peripheral point, but I still think it's worth being aware of: a workflow relying on these two profiles is basically not color managed. Worth keeping in the back of your head. It will always look fine inside an Apple ecosystem, but you could get in trouble when moving outside it.

    Markus bei Plutonika
    Markus bei Plutonika
    Participating Frequently
    October 24, 2024

    Thanks for the explanation.

     

    What exactly did you mean by "not color managed" and "getting in trouble outside the Apple ecosystem"? We are actually in the process of transitioning to Display P3 as our standard RGB working space and your comment made me wonder …

     

    Apart from the obvious differneces in gamut I don’t see why working in Display P3 instead of eciRGB, Adobe RGB or other large gamuts would not qualify as color managed.

     

    Also Display P3 is found on an everincreasing number of non-Apple displays – especially mobile ones.

     

    I’m not challenging your opinion – just curious if I misjudged everything and should not make the move to Display P3.

    Markus bei Plutonika
    Markus bei Plutonika
    Participating Frequently
    October 24, 2024

    @D Fosse Forget question number one – I just saw you elaborated on this here …

    One of our main use cases of color management is the conversion of RGB imagery to CMYK upon exporting INDD files. That is clearly not what you referred to.

    C
    Chris.SAuthor
    Inspiring
    March 16, 2023

    Ahh... looks like Display P3 was updated 1/1/22, and I'm assuming rolled out with Ventura, so it now matches image P3's D50. The prior version of Display P3 (introduced 6/18/15) was D65 under under Monteray.

    D Fosse
    Community Expert
    D FosseCommunity Expert
    Community Expert
    March 15, 2023

    They are identical: P3 primaries, sRGB tone curve, D65 white point.

     

    There is nothing to convert. It's just the name.

     

    If you're working with Image P3 as document profile, and Display P3 as monitor profile, you are in fact working without any color management whatsoever. If the two profiles are the same, nothing happens, and the net effect is that the document RGB numbers are passed on to the display unchanged. Which is the definition of "no color management". It doesn't even matter what the profile is - if they're the same, nothing happens.

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