Comment by throw0101a

> Digital is mostly limited by bits, since a 14 bit image with a linear tone curve will have at most 14 stops of info right?

Bit depth ≠ dynamic range.

The dynaic range is about the highest and lowest value that can be measure ("stops" are a ratio per log_2, db are a ratio per log_10):

* https://en.wikipedia.org/wiki/Dynamic_range#Human_perception

* https://en.wikipedia.org/wiki/Dynamic_range#Photography

The bits are about the gradation with-in that range. You can have 12-stop image recorded using a 10-bit, 12-bit, 14-bit, or 16-bit format.

And at least when it comes to film, it is not a linear curve, at least when you get to the darkest and lightest parts. That's why there's an old saying "expose for the shadows, develop for the highlights"

* https://www.youtube.com/watch?v=rlnt5yFArWo

* https://www.kimhildebrand.com/how-to-use-the-zone-system/

* https://en.wikipedia.org/wiki/Zone_System