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P: Add Open EXR support to lightroom classic

Community Beginner ,
Mar 31, 2024 Mar 31, 2024

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Feature Request: Add Open EXR support to lightroom classic
Could we please add open exr support to lightroom classic as an export file format.
This would be greatly appreciated in the visual effects industry, that require the .exr file format as the default image intermediate format.

Example use case
When working with multi camera scan data, either from a lightstage rig or a photogrammetry scan, we are provided with thousands of raw images to process. The target output image is usually a 16bit zip compressed .exr file to use for texture reprojection, or in compositing software for further processing.

To create the target .exr file requires multiple steps using Photoshop scripts (slow), 3rd party software, or custom compiled command line tools such as OpenImage IO. Whatever the process used, it takes valuable time away from doing the actual work its required for. It would be significantly more convenient to export a .exr file type directly from lightroom classic.

 

Thank you!

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macOS , Windows

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4 Comments
LEGEND ,
Apr 01, 2024 Apr 01, 2024

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With your current workflow, are you exporting the raws from LR as TIFFs and then converting them to EXR?

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Explorer ,
Apr 01, 2024 Apr 01, 2024

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If you export as 32bit TIFF with HDR edits enabled, you should get a linear fp32 file. (Use the "Adobe Neutral" profile to stop LR from applying its own curve). Nuke/Fusion can ingest this directly, and it's fairly simple to convert to a half-float zip EXR from there if that's what you need. It's extra steps, but not complicated and can be done with software you probably have around anyway.

 

I'd rather have OpenEXR IMPORT in LR, tbh. LrC 13.x changed how 32bit TIFFs are handled on import and now they have much more limited tonemapping compared to linear DNGs. I wish there was another file format that's more widely support that had the same handling that linear DNGs get, and depth map support in LR would be nice too.

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Community Beginner ,
Apr 01, 2024 Apr 01, 2024

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Thanks for the suggestion JtheNinja!
I tested this method and it does seem work, the full range is maintained which is excellent

This is a great workaround for the moment, but I still feel having import/export exr would be a great addition.

Cheers!

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LEGEND ,
Apr 01, 2024 Apr 01, 2024

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[This post contains formatting and embedded images that don't appear in email. View the post in your Web browser.]

 

"I tested this method and it does seem work, the full range is maintained which is excellent

This is a great workaround for the moment, but I still feel having import/export exr would be a great addition."

 

While waiting for Adobe to implement this (which could be a very long time), you could use the Run Any Command plugin in your Export preset to use Imagemagick (or other command-line tool) to convert from TIFF to EXR:

 

johnrellis_0-1712025172335.png

 

 

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