hi all.
I'm sorry for my english but i'm italian and i can't write it very well.
I've some problems when trying to control light intensity when using layers. When i switch off a light source (most of these are ies) others take more intensity/power.
How can i create a scene where i can normally switch off / reduce intensity without having problems with other layers?

If your are using Reinhard Tonemapping, switch to Linear/Camera.

you solved all my problems, thank you!