>>3141771>Why even have aperture and ISO in digital cameras? It makes sense to have both stuffs in film cameras, but why have them in digital photography? Just make brightness and contrast etc etc in the menu and voila good picture. if everything is electronic (aperture, ISO, shutter speed), why even have it? Aperture only makes sense in film photography.I don't think you understand what aperture is or does.
I also don't think you understand what ISO is or does.
Aperture is the size of the opening in the lens. It's the same for digital and film. It controls the amount of light coming in through the lens, both on film and digital. It controls how much depth of field you have, both film and digital. It's not just a brightness control that's emulated in digital cameras, it's a real optical thing that's being adjusted and having the exact same optical effect regardless of whether those optics are hitting a digital sensor or a strip of film.
Similarly, the ISO is just an internally consistent measure of how sensitive the imaging surface is to light. You still need to have that measurement whether you're talking about how sensitive a film emulsion is or whether you're talking about the gain applied to reading in the analog signals on a digital sensor. ISO has the same use on both film and digital, and analogous downsides (grain and digital noise). There's no reason to switch from the perfectly adequate numerical system they had in place for film when switching to the analogous setting on digital.
