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RAW EXIF tag editing Anamorphic de-squeeze:

could the following be achieved with Libraw?

apply a custom aspect ratio to Fujifilm.RAF RAW images are made with an anamorphic lens and applied to a specific aspect ratio de-squeeze (1.33X or 1.5X) on the horizontal axis. that will also be applied to any embedded preview images.

once the files have the proper aspect display metadata Capture One Pro will be used to process and export the final deliverables.

I am on MACOS Ventura.

I have not used Libraw in the past. but I am capable of following directions and asking for help if I’m stuck.

if it is not achievable with libraw; what process could implement the proper EXIF tag changes to "force" display the anamorphic images in the correct desqueezed aspect ratio?

thank you