ETTR - How?

I just bought a BMPCC and I've read about ETTR but I still don't get it. How do I get the video really bright without clipping?
When I adjust the Zebras (set to 100%) so it's not clipping, the picture is "dark". It looks great after some video editing but I don't think I'm doing it right.

The goal of ETTR (Exposing to the right), is to get as much "data" into the file as possible without losing any whites due to clipping.

The expectation is that when shooting for cinematic projects is that it will ALWAYS go through a color grading step that adjust the overall levels to the desired settings. If you didn't have all the "data" in the original clip then there's no way to get that "clipped" detail back during that color grading process.

Yes, I understand what ETTR does but I don't get bright video as described when adjusting the video just below clipping. I've seen a "ETTR video sample" and it's very bright and overexposed. How to shoot like that without seeing zebras?

If you're shooting RAW, you can change the ISO without changing the data. That will make the image look brighter. In RAW, ISO is just a number in metadata. The RAW data is unaffected.

The ISO is metadata, but will allow you to see in bright areas at ISO 200 or dark areas at ISO 1600. Set the Zebras at 100 and use the histogram for assistance on exposing. You want the bulk of the mids, just right of the center.

Ok, now I understand. Thank you for explaining.

If you're shooting RAW, you can change the ISO without changing the data. That will make the image look brighter. In RAW, ISO is just a number in metadata. The RAW data is unaffected.

so it`s no different shooting in 200 or 400 or 800 iso in bm4k ?

pushing up exposure add noise right ?

so it`s no different shooting in 200 or 400 or 800 iso in bm4k ?

pushing up exposure add noise right ?

In RAW, you're getting the RAW data off the sensor. Changing the ISO just changes a notation in the metadata. It doesn't change the RAW data coming off the sensor. You can shoot RAW at 800 ISO in camera, and then have Resolve debayer it at 200 ISO if you want.