Pinhole Camera – Simple Concept, Small Camera, Sophisticated Images
March 3, 2010
Image : http://www.flickr.com
Pinhole cameras can only be the simplest type of machine that has ever been invented, and have for a long time already. These cameras are used for art, entertainment, science, and monitoring. You probably have one or know someone who does. But have you ever thought about the mechanism behind a pinhole camera?
Not Your Typical Room
The pinhole camera is not a traditional camera, both in its form and function. Insteadthe typical case of a pinhole camera using a light matchboxes – cereal box and make boxes. And in place of conventional glass lenses, very, very small hole, the size of generated by a pin.
But do not underestimate the camera boxes. The fact is that the results are impressive and sophisticated art. The images will be provided after the exposure is much better than you by a film camera. And 'soft but crispy onat the same time, and the images have an almost infinite depth of field.
A simple concept
This simple camera on a principle just as simple pinhole optics. One side of the box is a small hole. The light from outside the area that passes through the hole and the image is formed on one side of the camera.
In order to better understand the concept of imagination, in a large dark box. On one side of the room, a small hole and outside the room of a friendholding a flashlight. Now, this friend of the torch shines through the pinhole camera in different angles.
Imagine the wall opposite the hole. On it is a small dot created by the light of the torch, which shines through the hole. When a friend moves the torch, the smallest point will also move around the wall.
Now imagine that this large field outside and show in your garden. On the wall opposite the hole will be reversed and a reversed image of the landscape. Each pointGarden and the beam emits light emitted from the point will pass through the hole, so that the corresponding number of light on the opposite wall.
Each point of the landscape is such transmission (), the light reflecting through the hole on the wall and all at the same time, so that created a complete picture on the wall.
The bigger the scene, and the smaller the hole will automatically lead to a longer process. It also means better results. The image is, of course,be weak, as the hole is very small.
Small Camera
The pinhole camera is actually available in many different formats. But however, is much smaller than the area referred to above. And instead of a bare wall opposite the hole, makes use of a pinhole camera in a kind of film. The film, which is pressed against the wall, draws the light or image through the hole.
The camera creates a friendly representation at center stage, wherePoint your camera. The exposure time is usually half a second to several hours, much longer time in the usual conventional camera. This is because the pinhole allowing only as much light through, but the result is in any case, the worth waiting.