@KingBadger3D Thanks for the compliment.
The light ratio is only proper for my particular setup only, you can still use it if you want.
I specify in the breakdown:
Directional light 768 and lightmass Environment scale 96 …
Also don’t forget that FOG will also require to use the HDR value to match
Multiply the value of your fog in the color picker (in my case I set mine to be value 32 and 20)
My Skybox emissive multiplier is 35.
If you were to follow that number by the text and have light bulb on your scene, you’ll be setting it’s lumens down to value of single digits. Hence why I wrote the extensive information about unreal HDR Lighting system numbering in the breakdown to suite people needs in their lighting.
As for the camera breakdown, the image I post is 100% image size, I didn’t resize it.
My original camera BP it’s a lot more confusing as I put many test instructions, not to mentioned the final result is imperfect hence why I didn’t release it. I hope people re-create it in order to understand it then improve upon it.
Tbh, the system is effective when the user understood how it works fundamentally.
There’s a classic saying Give a man a fish; you have fed him for today.
Teach a man to fish; and you have fed him for a lifetime, hence the extensive breakdown 
I sincerely apologize if the breakdown is confusing and not helping 