I was watching a video of pixar teaching how physical cameras work. Now two things are important for my question, first the number of light beams that can go through the small aperture and secondly which part of the real world emit these light beams. With a small aperture number of light beams are very few and they are coming from one or very few sources of the real object because aperture blocks a lot of light sources. Now for my question, when we want to use lenses as below.
While the number of light beams increased, it doesn't matter because all of them projected into same point. But the source of these light beams (where does this light beams come) are totally different. (All blue rays are coming from different part of the real world object) So how we can see exactly what we wanted with this method. I was expecting to see a very noisy image because the projected points is actually projection of rays coming from different part of the real life object.