>>3679949It's not impossible to build a tiny 100 MP sensor.
The technology to build such fine structures from silicone has existed for a long time, mainly used in CPUs, GPUs and SSDs.
DSLR/MILC don't use pixel densities that high for a reason:
It makes no sense to do so.
Not only does consumer glass sharp enough to make sense of such pixel densities not exist, it's also sacrificing uts low light capabilities for sensor resolution.
And then there are the output devices, with 4K resolution you're at 8,3 MP.
Most DSLR/MILC (APS-C and FF) have something like 20-50 MP wich gives them plenty of room to crop images and photosites large enough to deliver acceptable low light performance.
It gets even funnier if you consider the issue of diffraction.
Even with an absolutely perfect lens (that can not exist), diffraction alone severely limits these sensors.
With an aperture of only about 2,5 mm (estimate) and a FOV equivalent to a 50 mm normal lens, that gives you an equivalent of f/20.
Now that's far in the area of diffraction limitation even at 20 MP, even worse at 100 MP or more.
