Why does the spotlight effect so differently on surfaces using Standard material and PBR material?

Hello,I created a 3D scene with various objects.some using standard materials, some using PBR materials, now I need to add a spotlight to the scene, but the spotlight shines on the objects using different materials will be very different. I want to know how to avoid this difference.


Looking forward to your reply.

PBR is physically based, unlike standard material, so materials don’t behave in the same way. There’s not much you can do, it’s just the way it works. For this reason, you should normally try not to mix standard and PBR materials.

Light falloff and intensity unit have both to do with it: Babylon.js docs

I see. Thank you for your replay. Then I can only avoid using standard material and PBR material in the same scene at a time.