Autoexposure metada to exr

[Mikhalenko]

Hello, It would be great to have information about autoexposure (like ISO, I guess) in the metadata of .exr files, because sometimes I need to adjust the exposure in post-production. In terms of autoexposure, it's better to pull data from metadata, for example, as a multiplier in Nuke. This could be useful when I have rendered an animation, and then I re-rendered only a region or sphere fade, which will obviously have different exposure than the original render. To correct it, I would like to use metadata. Or another example: currently, I have an animation with slight flickering due to autoexposure, and to correct it, I would like to use metadata, which I don't currently have.

[hermit.crab]

You can already do that through VRayOptionsRE and MaxScript. Check the docs here. The provided example is for animation, however, it works for single frames, too. Just run the function.

[hermit.crab]

I'm writing a script to automate this. What other camera (or any) metadata do you think might be useful?

[Mikhalenko]

I'm writing a script to automate this. What other camera (or any) metadata do you think might be useful?

Thanks! I think whitebalance also will be useful. and maybe Vertical correction and shift

[hermit.crab]

Here you go. Ping if you notice something that's off.