>>3910843>>3910835>>3910832>>3910811>>3910804>>3910797>>3910795>>3910785>>3910784Here's a white paper from canon, explaining that a fivefold larger CMOS sensor gathers fivefold as much light. It also explains that smaller pixels need more gain applied to them to reach a reference brightness value (and that iso is arbitrary).
It's funny how the people designing these sensors agree with me, not you, isn't it :)
Are canon wrong too?
https://media.the-digital-picture.com/Information/Canon-Full-Frame-CMOS-White-Paper.pdf>>3910851A lens doesn't gather any light.
It's one half of a system.
A sensor gathers light.
How well does a recording desk record your voice if you don't have a microphone?
But yes, per mm2 an f2 FF lens projects just as much light as an f2 mft 50mm lens. You can see this for yourself, hold a lens between a flat piece of paper and a light source, start with a piece of paper that's the same diagonal as the diameter of your light circle, does the light intensity from the lens change if you put a smaller piece of paper under it? Does the small piece of paper or the large one catch more light?