Electronic Flash

The term of "electronic flash" refers to all flash units; it works to release "gas discharge tube.

It can be produced a temporary filling gas xenon light to mimic that with its color temperature in about the daylight and thus allow photos in the dark. This concept is a development of the Massachusetts Institute of Technology back that was presented in 1938. The main advantage is the low delay of the illumination of 1 / 300 to 1 / 40000 second. Special equipment allows in this way images with an exposure time up to a millionth of a second.

In today's electronic flash are mainly as external accessories for SLR option. They will be either a so-called "hot shoe" mounted directly on the camera, or - if, for example, positioning is necessary next to the camera - connected via a synchronous cable. Some manufacturers continue to offer wireless solutions that can be partially controlled with a remote control. In professional photo studios are also "photo coupler" used to "see" a photo detector the main flash of the camera and trigger when necessary while other flash lights. Thus, a wide-scale, synchronized lighting of the photo scenery is guaranteed.

The control of the flash intensity is today primarily through the camera. Furthermore, special systems to reduce the interruption of gas discharge, the amount of light given out.

Title Post: Electronic Flash
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Author: the Wicaksonos Family

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