Friday 27 September 2013

Research Into Pin Hole Photography

Pinhole photography is the use of a lenless camera, a tiny hole replaces the lens in the camera. At one end of the box is a hole and at the other end there is a film or photographic paper at the other. When light passes through the hole, an image is formed in the camera. Pinhole cameras are generally used for art and science. Images from a pinhole camera are generally alot softer than pictures made with a lense. However, images made by pinhole cameras do not tolerate enlargement like images taken with a lense. Images can be produced in both black and white, and colour.

A range of photographers use or have used the pinhole method of photography, including:
Steve Irvine
Justin Quinnell
Mark Tweedie
Steve Ashton.

Up to a certain point, the smaller the hole, the sharper the image, but the dimmer the projected image. Optimally, the size of the aperture should be 1/100 or less of the distance between it and the projected image.
Because a pinhole camera requires a lengthy exposure, its shutter may be manually operated, as with a flap made of light-proof material to cover and uncover the pinhole. Typical exposures range from 5 seconds to several hours.

A common use of the pinhole camera is to capture the movement of the sun over a long period of time.

Here are some examples of pinhole photography: 






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