What are good practices to keep in mind when lighting for scene-referred data? My understanding is that your lights shouldn't be limited by the dynamic range the default view can show.

I'm sure there's more to it than just making lights brighter and over-exposing the default view, but I don't know what. How do I know which lights should be how bright?

I've heard that using a logarithmic view transform is useful in these situations. Indeed, even with very bright reflections and dark shadows it allows me to see details in both. The only problem is I don't know what I'm looking for.

How does one light in scene-referred space?
As far I understand it, you can check your scene exposure and range by switching to one of the False Color looks in Color Management. 

Here's what the colors mean:


Low Clipping Black Scene Linear value 0.000176272 and below 
Nine Stops Down = Purple Scene Linear value 0.000351384 to 0.000702411.
Eight Stops Down = Blue Scene Linear value 0.000702411 to 0.002814643. 
Six Stops Down = Cyan Scene Linear value 0.002814643 to 0.044567918.
Two Stops Down = Green Scene Linear value 0.044567918 to 0.018009142.
Middle Grey = Gray Scene Linear value 0.018009142. 
Two Stops Over = Green Scene Linear value 0.719634476 to 2.883658483.
Four Stops Over = Yellow Scene Linear value 2.883658483 to 11.39491214. 
Six Stops Over = Red Scene Linear value 11.39491214 to 16.29174024.
High Clipping = White Scene Linear value 16.29174024 and above.


I've been recomended to make sure you don't see red or white which means you're probably overexposed in those areas. Likewise with avoiding the lowest regions of Black and Purple which indicates severe underexposure. If you can get a well exposed image rendered out, you can make a wide range of lighting adjustments in the compositor with the Color Balance node in CDL mode.

Troy S may need to correct this, but this is my current understanding of creating balance lighting in your scene.