A Le Posographe Exposure Calculator
Claud Michael Kauffmann (1931)
Category
Photographic technology
Date
1923
Materials
Metal, Plastic?
Measurements
132 x 85 x 6 mm
Place of origin
Paris
Order this imageCollection
Fox Talbot Museum, Wiltshire
NT 1525062.1
Summary
A Le Posographe Exposure Calulator. The unit is metal with some plastic coating and it is a sophisticated system of interconnected levers which act together to determine exposure values. The emulsion speed is set together with lighting parameters, proportion of visible sky, time of day, time of year and type of subject. Information is also given for interior subjects.
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
Claud Michael Kauffmann (1931), manufacturer