Colors are degraded in the photo

[DominiqueVial]

Lychee version

v7.1.2

Did you check the latest Lychee version?

Yes, I did

Which PHP version are you using?

PHP 8.4

Detailed description of the problem

The colours in the generated image are significantly altered.

Here is a file that allows you to visually assess this degradation.

Picture settings

File

File name    2024-01.jpg    
File size    6.05 MB (6,347,372)	

Image

Format    JPEG TrueColor (v1.1)    
Width    5874    
Height    2921    
Dimension    17.158 Mpixels    
Number of bits    24    
Colour model    RGB    
PPI    300 x 300	
Print size    49.73x24.73 cm, 19.58x9.74 inches    
Compression    JPEG    
Progressive mode    No    
Subsampling    1x1,1x1,1x1	
Estimated quality    98    
No. of images/pages    1    
Origin          Top left  

Colour profile

Description     ProPhoto RGB    
Manufacturer    KODAK    
Model           Reference Output Medium Metric (ROMM)      
Copyright       Copyright (c) Eastman Kodak Company, 1999, all rights reserved.	

Steps to reproduce the issue

1. Upload a JPG file to an Album
2. Wait for upload to complete
3. Compare original picture to generated thumb

Diagnostics [REQUIRED]

Lychee Version (release):                  7.1.2
DB Version:                                7.1.2
Docker:                                    false
composer install:                          --no-dev
APP_ENV:                                   production
APP_DEBUG:                                 false
APP_URL:                                   set
APP_DIR:                                   default
LOG_VIEWER_ENABLED:                        true
System:                                    Linux
PHP Version:                               8.4.16
PHP User agent:                            Lychee/6 (https://lycheeorg.dev/)
Timezone:                                  Europe/Paris
Max uploaded file size:                    256M
Max post size:                             256M
Chunk size:                                25.60 MB
Max execution time:                        300
MySQL Version:                             10.11.15-MariaDB
exec() Available:                          yes
Imagick Available:                         1
Imagick Enabled:                           yes
Imagick Version:                           1691
GD Version:                                bundled (2.1.0 compatible)
Number of foreign key:                     33 found.

		

Browser & System [REQUIRED]

Browser ZEN (Firefox 146.0.1)
System MacOS BigSur

Please confirm (incomplete submissions will not be addressed)

• I have provided easy and step-by-step instructions to reproduce the bug.
• I understand my bug report will be removed if I haven't met the criteria above.
• I understand that if I am requested to provide more information, I must do so within 14 days or the bug report will be closed.

[ildyria]

Could you check that this is only impacting medium and not original ?

[ildyria]

Would you be able to provide me with the above image? So I can do some local testing.
See if there is a work around that can be done to avoid that annoying shift. :/

[DominiqueVial]

Humm...
Ok if I can send provide it to you in a private way.

[ildyria]

On my mail: benoit@viguier.nl or noreply@lycheeorg.dev to your liking.

[DominiqueVial]

ok.Done

[DominiqueVial]

I changed the color profile to sRGB IEC61966-2.1.
Everything is fine now.

That is at least a temporary solution.