Ever since picking up a RED Komodo, we’ve vacillated between two procedures for normalizing ETTR RAW footage: either reducing the ISO in the RAW tab of the color page in DaVinci Resolve or using custom curves. To correct overexposure in post with custom curves, all you’ve got to do is create a gentle convex curve, whereas correcting with ISO involves two steps: (1) reducing ISO, then (2) adding an S-curve to boost contrast and saturation. Since the latter approach requires two operations, for simplicity’s sake, we now unhesitatingly recommend the former solution.
Illustration credit: Soumyadip (Roni) Sengupta and Mykhailo (Misha) Shvets
The Daejeon Chronicles 
When working in raw, I definitely agree that adjusting the ISO in the raw tab is the way to go. I shoot on Sony hybrid cameras (external raw only) so I’m often shooting normal video files in S-Log3. For me, I find the global exposure tool in the HDR to be the best for correcting ETTR.
Thanks for the info, Sturmen. The global wheel in the HDR palette is said to be a photometrically accurate way to adjust exposure in post. After correcting exposure with the global exposure wheel in HDR, do you often find yourself adding a bit of contrast or saturation to your S-log3 footage? Do you ever add an S-curve after correcting exposure that way? Do you use DaVinci color management and DWG Intermediate or some other timeline color space?
Yes, I use DaVinci Color Management with the DWG intermediate. I do add a bit of contrast, but I do the same thing even on properly-exposed footage. I find that the HDR tool works well enough that I treat it the same as if I had adjusted the ISO in raw.