What is best workflow for having a scene with multiple light setups? I have a scene with interior room design and I created several light setups for it (daylight from windows, powerful electric light from the ceiling, moody evening light from floor lamps). What would be the best workflow to work with that and be able to batch render them?

For now I have each group of lights in different layers. I can then select which layers I want and start rendering. However this doesn't allow me to batch render several setups at once, because there is no command-line to switch layers on/off.

I read about scenes and wondered if making several scenes which would have same objects, but different lights would do. Batch rendering is possible. But I'm afraid that working further on the design, adding new objects etc. will be tricky, as I will have to somehow synchronize all objects between these scenes.

How is this normally achieved?

I need still images only, no animations.
Instead of layers use scenes

In this example I want to have two scenes with the light on different places, so
I created a new scene by pressing the + button for scene on the info window 

then moved the light to the other side and rotated it.



You can  choose to link your objects or do a full copy, is up to you and how you want to use your resources. If you link your objects then changes made in one scene will affect objects on others) 

Then in the compositor I can have each scene as a render layer and switch between the two of them at will.



If you want to save each scene to a different file on the same render operation then just add file output nodes to each of the scenes.