What values do the red lines in the luma waveform stand for in Blender?

I know that the three red lines on the luna waveform stand for some values, but I'm not sure how Blender interprets these lines. I assume the bottom red line is black and the top red line is white, so what is the line between those two stand for?

  • Jonathan Lampel replied

    Hey ccash_flagg , can you share a screenshot? I'm only seeing one red line, which represents the "safe zone" of dark before it gets to pure black. 

  • cash_flagg replied

    I'm using Blender 2.8, not sure where you are in 2.79 or 2.8 there, but here is my screenshot.

  • cash_flagg replied