A pinhole camera has no lens. The effect here is like a pinhole camera, but a pinhole camera is nothing at all like a lens. Pinholes diffract light. Lens refract light.
The diffraction effects from a pinhole camera are not what make them work. In fact, diffraction makes the photographs worse than they otherwise would be. The pinhole makes an effective aperture for photography because it’s small size produces small circles of confusion on the film plane. Ideally, you would make the hole as small as possible, but beyond a certain (small) size, defraction becomes the dominant source of blurring. So the size of the pinhole should be chosen to yield the best balance between geometric blur and diffraction blur.
The diffraction is merely a limit to the smallness of the aperture, and not what creates the image.
Yea, but you could achieve this by placing a circle of cardboard in the middle or a ring that you attach to your lens.
I don’t remember the guy but YT shorts I’ve seen a guy testing all sorts of different shapes and filters in front of his lenses or even just in front of his sensor without a lens.
Our window blinds at school had tiny holes in them for the strings to go through and they had the exact same effect. You could see the eclipse projected once the tables.
The reason this happens is because the tiny gaps between the leaves act as lenses, like in a pinhole camera.
A pinhole camera has no lens. The effect here is like a pinhole camera, but a pinhole camera is nothing at all like a lens. Pinholes diffract light. Lens refract light.
The diffraction effects from a pinhole camera are not what make them work. In fact, diffraction makes the photographs worse than they otherwise would be. The pinhole makes an effective aperture for photography because it’s small size produces small circles of confusion on the film plane. Ideally, you would make the hole as small as possible, but beyond a certain (small) size, defraction becomes the dominant source of blurring. So the size of the pinhole should be chosen to yield the best balance between geometric blur and diffraction blur.
The diffraction is merely a limit to the smallness of the aperture, and not what creates the image.
I didn’t say this, you did. You’re chasing your own tail.
Yea, but you could achieve this by placing a circle of cardboard in the middle or a ring that you attach to your lens.
I don’t remember the guy but YT shorts I’ve seen a guy testing all sorts of different shapes and filters in front of his lenses or even just in front of his sensor without a lens.
Can’t recall who.
Anyhow
Our window blinds at school had tiny holes in them for the strings to go through and they had the exact same effect. You could see the eclipse projected once the tables.