Johnson "Standard Exposure" Calculator.
Johnson & Sons Manufacturing Chemists Ltd
Category
Photographic technology
Date
1946 - 1955
Materials
Plastic, Metal
Measurements
3 mm (Depth); 65 mm (Diameter)
Order this imageCollection
Fox Talbot Museum, Wiltshire
NT 1525076
Summary
Johnson "Standard Exposure" Calculator. Cream plastic ('ivorine') disc with rotating calculation dial printed in black and red. Metal central rivet holds the discs together.
Provenance
Part of the Fenton Collection. A gift from British Film Institute in 2017. From 1986-1999, part of BFI collection for the Museum of the Moving Image. BFI purchased collection in 1986 from James Fenton's Museum of Photography, Port Erin, Isle of Man 1976-1986.
Makers and roles
Johnson & Sons Manufacturing Chemists Ltd, manufacturer