I have a pretty simple torch blueprint - just mesh, sound, particle (from one of demos) and point light. Why my light are soo much darker when I am playing than in viewport? Im am trying to build a production quality lightning but it didn’t change antyhing.
I am using a meshes from Unreal demos, so UV’s should be right.
I think I found a sollution. The problem is eye adaption. So i set a post processing volume and auto exposure → min brightness to 2 (max brightness to 1 but I unchecked this because my character blue body is too shiny). Also in World Settings I set diffuse boost do 2.5.
You are correct it is eye adaption (Auto Exposure) that is causing the lighting difference you are seeing. I would suggest making sure your post process volume is set to unbound (Checkbox toward the bottom of the volume’s details) and under Auto Exposure set the min and max brightness to exactly the same number, I usually use 1 and 1, but for your scene whether you want it brighter or darker you can change that value. As long as the numbers are the same you will get no eye adaption.