Exposure Time: It Can Be Important

Harold E. Edgerton

doi:10.1117/12.967706

1 March 1983 Exposure Time: It Can Be Important

Harold E. Edgerton

Proceedings Volume 0348, 15th Intl Congress on High Speed Photography and Photonics; (1983) https://doi.org/10.1117/12.967706
Event: 15th International Congress on High Speed Photography and Photonics, 1982, San Diego, United States

Abstract

All electronic flash sources have "fast," that is, "short" exposure times compared to conventional shutters. There are many users who do not realize that the effective exposure time is not the same for all flash equipments. This paper discusses the exposure time and how it is influenced by the electrical characteristics of the flash lamp, and the electrical discharge circuit. It is pointed out that the "exposure time" of many electronic flash lamps is entirely too long for some applications. The "blur" experienced in a photograph of each subject is directly due to the exposure time, and the velocity of the subject. It is obvious that photographs of people do not require as short an exposure as does the photography of a fast moving bullet. Most of the imporant factors influencing the flash-duration of electronic flash lamps will be discussed in detail. Specialized equipment for bullet and bird photography, where extra short exposure times are important, will also be described.

Citation Download Citation

Harold E. Edgerton "Exposure Time: It Can Be Important", Proc. SPIE 0348, 15th Intl Congress on High Speed Photography and Photonics, (1 March 1983); https://doi.org/10.1117/12.967706

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