bad lighting when hitting play button

when im working in editor lighting is awsome without any problem but when im pressing play(or something like that i cant remember) everything getting so bright and every time i move the camera the brightness get change and my lighting getting ruined what i have to do cuz i dont want my lighting get changed what i have to do? (BTW sorry about my bad english )

The problem may have something to do with one of Unreal Engine’s default post-processing tools, “auto exposure.”

Go to Project Settings > Rendering > Default Settings and try unchecking auto exposure (and maybe bloom, too).

Could you show us a photo of what you’re talking about?