While grading my most recent S-log3 HDR video, I realized I’d failed to reduce brightness levels down to proper values in my previous ProRes RAW HQ HDR sample. In both videos, I’m wearing an orange cap and black jacket and sitting in a dark room a few feet away from a window on an overcast day.

With the help of the HSL qualifier, we see that the brightest pixels are in the windowsill and the alpha insignias on the cap and jacket.

If we want to preserve every last bit of texture in the threads of the alpha insignias and in the windowsill, we’ve got to maintain brightness below 100 nits for sure. If we’re willing to lose a little detail in the shiny threads in order to more accurately reflect what our eyes see in real life, we can push a little further. Which is why the brightest highlights measure no more than 200 nits in the waveform monitor of the NLE.

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out /  Change )

Google photo

You are commenting using your Google account. Log Out /  Change )

Twitter picture

You are commenting using your Twitter account. Log Out /  Change )

Facebook photo

You are commenting using your Facebook account. Log Out /  Change )

Connecting to %s

This site uses Akismet to reduce spam. Learn how your comment data is processed.