Not only are pinhole cameras entirely legal to use, they can be fun to build and use.
Making and using a pinhole camera uses all of the really important principles of Photography. Any serious student of photography should do just that. Apart from the satisfaction of having a picture that you can say you created all by yourself, it will teach the principles in only two or three hours.
No, because pinhole cameras don't have any lens.
All types of cameras, pinhole and those using optical lenses, use light which is an electromagnetic radiation
The first cameras were pinhole cameras. They worked by the light from the image on the outside enters through the pinhole and flips it on to the film on the inside and the film captures it.
find it you self......
Pinhole cameras do work in real life. They just do not produce as good a quality of picture as most of our fancy high-tech cameras do. Partly, that is because you cannot regulate the light as well with a pinhole camera.
It literally takes long-exposure photos through a pinhole that projects an inverted image into a darkened box.
Because the aperture is tiny, so as to take advantage of the depth of field a small aperture will give. This lets pinhole cameras make sharp pictures without needing any way to focus them.
All spy cameras can be legal or illegal depending on the way they are used. If you use it for home security then it's perfectly legal. If you use it for ... uh, spying on someone in a bad way (bathroom) then it could be illegal.
pinholes were the first cameras ever, so i presume they are older
I think a pinhole camera is similar to the human eye because like the pinhole camera when it sees something it reflects the image but it is an inverted image. With the human eye the brain corrects it and turns it the right way up. The pinhole cameras image is not corrected because it does not have a lens.
You can find pinhole cameras at stores like Daiso (for really cheap ones) or you can look at stores like Sears and Best Buy's. You can also try Amazon or EBay.
A focusing screen in a pinhole camera? Uhh...no. A pinhole camera is a box with a very small hole in one end of it and a piece of film in the other end. The screens in reflex cameras and in view cameras are translucent to give the image something to form on. The light will pass through a transparent screen without forming an image, and it won't go through an opaque screen at all.