5 A Brief History of Flash
Faraday Theatre. The Royal Institution of Great Britain, London, England. It was here in 1864 that one of the earliest known flash portraits was taken before an amazed Victorian public. However, this photograph is illuminated not by magnesium wire, but by a single Elinchrom Universal 750S monolight triggered by a Pocket-Wizard radio remote. The studio flash was positioned where the demonstration would have taken place all those years ago. EOS 5D, 1/60 sec at f/11, ISO 100, MC Zenitar 16mm fisheye.
This is an example of radio control over manual studio flash.
The very first photographers could only take their pictures ...