for digital, how many megapixels is enought. i know that 16 is

4K is 8 megapixels my man.

As for how many is enough? There is no limit. The more, the merrier. Megapixels are one thing, pixel pitch (how small the actual sensels/physical pixels are in real life) is another. There is a practical limit to pixel pitch, where you start getting rapidly diminishing returns because the sensor out-resolves the glass. I would also reckon that the physical limit is only around 200% smaller than today's smallest pixel pitch sensors, since you start getting pixels that are physically smaller than the wavelength of visible light (we're at 1300 nanometers, but red light is 700 nanometers). I could be wrong about that last part though because I'm an idiot college dropout artist and not a physicist, imaging scientist, or optical engineer.

>>3030741
no it makes sense, if you have pixels smaller than the wavelength of light then you would start seeing colourshifts when viewed at 1:1.