Render files saved with wrong color profiles #112345

New Issue

Christopher Tyler · 2023-09-13T19:21:33+02:00

Christopher Tyler commented

2023-09-13 19:21:33 +02:00

System Information
Operating system: macOS-13.4.1-arm64-arm-64bit 64 Bits
Graphics card: Metal API Apple M1 Pro 1.2

Blender Version
Broken: version: 4.0.0 Alpha, branch: main, commit date: 2023-09-11 20:52, hash: dd9f196c2e2e
Worked: (newest version of Blender that worked as expected)

Short description of error
4.0 has new color profiles. Renderings, depending on the file type, save/embed either the wrong color profile or none is saved when one should be.

Exact steps for others to reproduce the error
Set the Display Profile to one of the new profiles, such as Display P3. My laptop uses P3 natively so I've been testing it. But this also happens with Rec2020.

After a rendering is done, save the rendering to one of the formats that's capable of embedding an ICC color profile such as JPG, JPG2000, PNG or TIFF. Depending on the format, the Display Profile is ignored, with sRGB being saved for some, or no profile being embedded for others.

So for instance, with Display P3 set for the Display device this is how each of the following formats behaves upon saving:

• JPEG200 --> sRGB embedded (should be P3)
• JPEG --> sRGB embedded (should be P3)
• PNG --> No color profile embedded (should be P3)
• TIFF --> No color profile embedded (should be P3)

In Photoshop's color management is set to 'Preserve Embedded Profiles' and to 'Ask When Opening' for mismatched profiles. Set the RGB working space to something like Adobe RGB (1998) so it's different from sRGB and Display P3 and will therefore notify the user of a mismatch when opening a render file.

In fact something doesn't seem right about how even sRGB is being saved with JPG because the finder shows it has have sRGB as the embedded color profile, but when you open it in Photoshop it doesn't recognize that profile.

In Photoshop, I can resave each of the files once I've assigned the P3 color profile, save it and then upon reopening in Photoshop, they behave correctly. Meaning Photoshop correctly recognizes the file has Display P3 which is a mismatch to the color management settings.

I've uploaded a working Blender file and some saved renderings.

https://drive.google.com/drive/folders/1964tiCotmUZni2e2vKmyXjVjOnh45anc?usp=sharing

**System Information** Operating system: macOS-13.4.1-arm64-arm-64bit 64 Bits Graphics card: Metal API Apple M1 Pro 1.2 **Blender Version** Broken: version: 4.0.0 Alpha, branch: main, commit date: 2023-09-11 20:52, hash: `dd9f196c2e2e` Worked: (newest version of Blender that worked as expected) **Short description of error** 4.0 has new color profiles. Renderings, depending on the file type, save/embed either the wrong color profile or none is saved when one should be. **Exact steps for others to reproduce the error** Set the Display Profile to one of the new profiles, such as Display P3. My laptop uses P3 natively so I've been testing it. But this also happens with Rec2020. After a rendering is done, save the rendering to one of the formats that's capable of embedding an ICC color profile such as JPG, JPG2000, PNG or TIFF. Depending on the format, the Display Profile is ignored, with sRGB being saved for some, or no profile being embedded for others. So for instance, with Display P3 set for the Display device this is how each of the following formats behaves upon saving: • JPEG200 --> sRGB embedded (should be P3) • JPEG --> sRGB embedded (should be P3) • PNG --> No color profile embedded (should be P3) • TIFF --> No color profile embedded (should be P3) In Photoshop's color management is set to 'Preserve Embedded Profiles' and to 'Ask When Opening' for mismatched profiles. Set the RGB working space to something like Adobe RGB (1998) so it's different from sRGB and Display P3 and will therefore notify the user of a mismatch when opening a render file. In fact something doesn't seem right about how even sRGB is being saved with JPG because the finder shows it has have sRGB as the embedded color profile, but when you open it in Photoshop it doesn't recognize that profile. In Photoshop, I can resave each of the files once I've assigned the P3 color profile, save it and then upon reopening in Photoshop, they behave correctly. Meaning Photoshop correctly recognizes the file has Display P3 which is a mismatch to the color management settings. I've uploaded a working Blender file and some saved renderings. https://drive.google.com/drive/folders/1964tiCotmUZni2e2vKmyXjVjOnh45anc?usp=sharing

Christopher Tyler added the

labels 2023-09-13 19:21:33 +02:00

YimingWu commented

2023-09-14 05:46:56 +02:00

Can confirm, identify -v file.png does only indicate a gamma of 0.4545 on png without srgb tagging or icc profile.

It seems to save post-transform colors to these images.

Can confirm, `identify -v file.png` does only indicate a gamma of 0.4545 on png without srgb tagging or icc profile. It seems to save post-transform colors to these images.

YimingWu added

Module

Render & Cycles

Status

Needs Info from Developers

and removed

Status

Needs Triage

labels 2023-09-14 05:52:31 +02:00

Christopher Tyler commented

2023-11-13 19:29:51 +01:00

I'm following up with this report. I downloaded the latest release candidate build, and I'm still seeing issues here.

If I set my color management so P3 is my display device, file formats like JPG still save as sRGB. Shouldn't they be saved with P3?

I'm following up with this report. I downloaded the latest release candidate build, and I'm still seeing issues here. If I set my color management so P3 is my display device, file formats like JPG still save as sRGB. Shouldn't they be saved with P3?

Brecht Van Lommel referenced this issue

2023-11-13 19:44:32 +01:00

Color Management Improvements #68926

Brecht Van Lommel commented

2023-11-13 19:44:52 +01:00

I've added this to the To Do list here now: #68926

This is not considered a bug, but a missing feature.

I've added this to the To Do list here now: #68926 This is not considered a bug, but a missing feature.

Brecht Van Lommel closed this issue

2023-11-13 19:44:55 +01:00

Blender Bot added

Status