Can I use Lightmix with images rendered with backburner?

[patrick.testa]

Is there a way to save .cexr files using backburner and then open them in the Corona VBF and work with the Lightmix to obtain different version?
Am I missing something or you can use Lightmix only on fresh rendered images or on .cexr files saved manually from the VBF?
I would need to batch calculate several images and then fine tune them at a later time...
Thanks in advance!

Patrick

[Jens]

You can do it, just note that to be able to resume render from that .cexr file, you need to manually rename the .cexr ending to just .exr otherwise Corona won't be able to find that file when you browse for it from the "Resume render" button in render setup "Scene" tab.

Also note that even if you enabled denoising on all your lightselect render elements, this doesn't do much when you open it up later. Basically you have to resume your render, wait for it to render, then click "Stop" and what that does is, it starts the denoising process once again. I don't think this can be avoided and I've actually just made a topic about it the other day: https://forum.corona-renderer.com/index.php/topic,15169.0.html

TL:DR
Yes, but you have to manually rename the file to .exr and let it run denoise on all passes again.

[patrick.testa]

Hello Jens,
thank you for your answer! I found out how to save the .cexr files using Corona autoback function! Now I can resume the files and fine tune the lights!
Sadl I hadn't considered one aspect... When I save the exrs edited in Lightmix, only the beauty pass is updated, while all the other passes I usually save remain unaltered. So if in Photoshop I want to edit reflections or other things, those levels will tend to bring back lights that I may have turned off or modified in color...
This way the lightmix is useful only to alter images that are already perfect in all other aspects and won't need pimping in Photoshop (which instead I use a lot to improve things that I don't have time to make come out perfect right away with the bare render).
Anyway I will have to do more testing to insert this useful feature in my personal workflow!
Thanks again,

Patrick