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PC-socket, greatly magnified

A Prontor-Compur connection (also known as a PC connector) is a standard 3.5 mm (1/8") electrical connector (as defined in ISO 519[1]) used in photography to synchronize the shutter to the flash.[2]


  1. ^ ISO 519:1974, ISO 519:1992 (1992-11-25). Photography -- Hand-held cameras -- Flash-connector dimensions. Geneva: International Organization for Standardization.
  2. ^ Norman Axford et al. (2000). Manual of Photography: Photographic and Digital Imaging. Focal Press. ISBN 0-240-51574-9. 

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