I can’t get this room dark. I would like it to be lit very dimly by indirect sunlight reflected on the wall seen on the right (first image). But I noticed that when I set the intensity light of the sun on 0 (directional light), the room is always lit when it should be completely dark since there is no other light sources (second image). How do I solve this?
you probably also have a skylight in the scene. Try adjusting the intensity on that as well.
You didnt mention if this is realtime or baked, but if it is not realtime you will need to bake the level in order to see changes.
2 Likes
problem is auto exposure…go to project settings look for auto exposure and turn it off.
It seems the engine is trying to compensate exposure as you change lights to make it lighter or darker
2 Likes
@eldany.uy is right. Additionally, you can place a post-process Volume and turn the Autoexposure off in there.
2 Likes
Skylights in Unreal 4 are unshadowed unless you use baked lighting. Moveable skylights will beam light in all directions through all meshes. Moveable skylights can cast DFAO, but you may find the quality undesirable and it will still not produce realistically dark interiors.
If you want realistic results, you will need to bake.
1 Like
Just an FYI for people who are still using baked or non-lumen lighting… If you go to the Auto Exposure settings of your post process volume and lower the Speed Down to the minimum value (0.02), this will essentially prevent your “eyes” from ever adjusting to the dark. Personally, I like when you still get the over bright effect when you move from a dark area into a bright area. It was always just the complete lack of dark areas that bothered me. These are my go-to settings to get the best out of the Auto Exposure/Eye Adaptation system:
Min Brightness (default): 0.03
Max Brightness (Max): 20 - This really blooms for a moment when you walk out of a dark area
Speed Up: 10 - Speed from a dak area to a bright one is faster. The default of 3 is too slow.
Speed Down: 0.05 - This makes it so if you hang out in a dark room for around 1 minute, you’ll actually be able to see which to me makes sense.
