Animation Lightmix + Bloom and glare in a separate pass

[DCA2022]

Hello,
I'm rendering animation and I need the bloom and glare in a separate pass from the Interactive light mix pass.
How I can have the bloom and glare in a separate pass without having it applied to the Interactive light mix pass?

Thanks!

[TomG]

You can't separate it from the LightMix (you can do it from the Beauty, with a VirtualBeauty with bloom&glare unchecked), so what you can do is this -
- Add a bloom and glare render element
- Once rendered, save all to save out everything separately, including all the individual LightSelects
- Stack the LightSelects in post, using Linear Add in your software of choice. Carry out your LightMixing here, adjusting hue and intensity of the individual LightSelects
- Place the bloom & glare on top of this.

BUT do note that this will mean your bloom&glare is based on the single Beauty and will not account for the edits you make in the composite.

Also, what are you trying to achieve btw? Might be easier just to save the LightMix with b&g on, then turn it off and save it again, doesn't require re-rendering. You could then combine those in post, masking out the bloom & glare version to control b&g strength or use adjustment layers to tweak b&g colors. Or you could subtract b&g off version from b&g on version to end up with isolated bloom and glare, that should work too.

[DCA2022]

 Thanks a lot!
Very useful, it's a shame you cannot have the bloom and glare effects in a separate channel from the lightmix pass. are u planning to improve this aspect on next Corona release?

[TomG]

No plans in the next release - you can submit a request in the Feature Requests board for it to be considered in future though :) https://forum.corona-renderer.com/index.php?board=5.0v

Thanks!