>>4173588Generally you want as much dynamic range and bit depth on a digital camera as possible so you can emulate the objectively more pleasing highlight response and practically infinite (as many gradations as are possible in chemistry) color gradation of film, or to shoot film. Having more stops of dynamic range available on the sensor, far beyond what can be represented when displayed is how you protect those highlights and simulate film (real photography). ISO invariance is part of this practical dynamic range and is only consistently on sony, pentax, nikon, and fujifilm cameras.
This is all you need to know.
