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@ mleku
2025-05-11 20:45:30
it's because the hole only catches the photons that follow the straight path from the object the photon hits and then to the hole and then it hits the surface on the other side
there is lensing but it causes only slight distortion at the edges where it fades quickly to darkness, the centre part of the image is in perfect focus no matter where the object is, i think you would say that it has a very long depth of field
if you make the hole bigger you start to get more depth of field and only some of the image will be in focus
this is the same with our vision too, drugs that cause eye dilation also create a "soft focus" effect on your vision, everything seems warm and fuzzy