UE5 LUMEN is there a way to stop emissive materials from casting light?

[NASRHYM]

I have a light bulb that I wanna use an emissive material on but the way UE5 works makes the material spill light onto the scene. is there a way to stop this from occurring?

[BananableOffense]

Another member pointed me to this thread, for those who might come across this in the future.

Lumen - Material Pass Replace Node

Having played with Lumen and the material editor for a while this morning, it sorely stood out to me that Lumen does not use any of the existing Switch/Replace nodes in the Material Editor, nor does it have its own. Currently, if one would want an emissive surface to be 1 intensity on-screen, but 1000 intensity for Lumen, that’s not possible, while it’d be an incredibly useful control to have for artistic direction.

[NASRHYM]

Good looking out

[zubetto]

This seems to be possible on a per-mesh basis by unchecking Affect Distance Field Lighting in the details panel (see Problem-Causing Meshes in Lumen Docs). The mesh with an emissive material will still be visible in the Screen Tracing reflections.

[zeit-feld]

Seems there is a very simple way: Just set the emissive material blend mode to “translucent”.

[reznik_krkovicka (Antonín Škero)]

bless you bro

[Arkiras]

Just a small note: Setting the material to translucent will not work if you are using TSR as your antialiasing method in 5.2 and below. In 5.3 and up it should work correctly, even with TSR.