how is HDR different than simply adding more bits for finer steps between the same existing colors?

Question

how is HDR different than simply adding more bits for finer steps between the same existing colors?

In: 6

Answer 1

“Just adding bits” costs memory, size, power, and speed, and makes it more difficult to recover a clean signal. As others have said it’s more about adding range than resolution; HDR allows you to “hack” more bits out of the system.