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HDR Image Export: AVIF and JPG XL export with different headroom values for the same image

Explorer ,
Nov 29, 2024 Nov 29, 2024

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If you export the same image with the same settings, but output to AVIF and than JPG XL, the headroom values of both images will be different.

 

Example:

AVIF = 15.419

JPG XL = 4.926

 

The image was the same edit for both exports, everything was the same except for the format. Maximize Compatibility was turned off, so gain maps were not added. AVIF headroom seems to vary per image, while JPG XL is the same for all exported images.

 

Preview.app with macOS Sequoia will show the headroom for each image.

Using latest version of Lightroom Classic with MacOS 15.1.1.

 

[Moved from ‘Bugs’ to ‘Discussions’ by moderator, according to forum rules.]

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