building and how a pin hole camera works

how a pin hole camera works

A pinhole camera is the simplest camera possible. It consists of a light-proof box, some sort of film and a pinhole. The pinhole is simply an extremely small hole like you would make with the tip of a pin in a piece of thick aluminum foil.

A pinhole camera works on a simple principle. Imagine you are inside a large, dark, room-sized box containing a pinhole. Imagine that outside the room is a friend with a flashlight, and he is shining the flashlight at different angles through the pinhole. When you look at the wall opposite the pinhole, what you will see is a small dot created by the flashlight's beam shining through the pinhole. The small dot will move as your friend moves his flashlight. The smaller the pinhole (within limits), the smaller and sharper the point of light that the flashlight creates.

Now imagine that you take your large, dark, pinhole-equipped room outside and you point it at a nice landscape scene. When you look at the wall opposite the pinhole, what you will see is an inverted and reversed image of the scene outside (see top) . The pinhole in a pinhole camera acts as the lens. The pinhole forces every point emitting light in the scene to form a small point on the film, so the image is crisp. The reason a normal camera uses a lens rather than a pinhole is because the lens creates a much larger hole through which light can make it onto

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the film, meaning the film can be exposed faster.

how to build a pin hole camera

1 materials
oatmeal box
spray paint black
electrical tape
heavy-duty aluminum foil
No. 8 needle
300-grit sandpaper
x-acto knife

Step One

to Build your camera using any sturdy container like a oatmeal box. F

Step Two

spray paint the interior of the box

Wait for the paint to dry.

Tape all the seams with black electrical tape.so that no light can get through.

to create a shutter connect two pieces of black contsruction paper.

to make the hole get a #5 needle and poke a hole in the center of the bottom of the can.

make sure your box is light tight

go out side and start taking pictures with your new pin hole camera.

final pictures will look like this:

(below left picture shot before scanning)
(below right picture after scanned and fix using photoshop)