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@lisyarus is this about emission per surface area vs emission per full area conversion maybe?

@breakin Btw I've already tracked the issue in code, look here if you're interested: https://projects.blender.org/blender/blender/issues/135073

@lisyarus Makes sense! Converting between material systems is a lossy and sometimes not fun exercise but good if it becomes better!.

@breakin @lisyarus I spotted the same issue in my own code ( https://avoyd.com/ ) yesterday when I added support for emissive factors > 1.0 in my non-texture based export pipeline for .obj. Many thanks for submitting an issue (you beat me to it)!

As you found, using a texture map for emission fixes this, and that's the main approach I use to export material parameters, but it's harder to edit so I still keep this option available.

@dougbinks @breakin I've just submitted a patch, hopefully this will be fixed in the next Blender version :)

https://projects.blender.org/blender/blender/pulls/135094

@lisyarus @dougbinks @breakin Looking into it!

@aras @dougbinks @breakin Thank you!

@lisyarus @dougbinks @breakin Done! https://projects.blender.org/blender/blender/commit/e1bcd08f61314