SEI Exposure Photometer.
Salford Electrical Instruments Ltd.
Category
Photographic technology
Date
1960 - 1965
Materials
Metal, Glass, Plastic
Measurements
178 x 45 x 76 mm
Place of origin
England
Collection
Fox Talbot Museum, Wiltshire
NT 1525742.1
Summary
SEI Exposure Photometer. The whole is a metal cylinder with a view finder and object lens protruding through it and a standard brightness gage on the top of the unit which reads – Patent Number 582673 Others pending 166915A The photometer has battery housing and operating rings. The main body has complex exposure timescales, lens aperture and film speed scale. Key components – Operating ring Setting ring for shadow or key tone methods Daylight or artificial light settings Adjustable telescopic eyepiece Microammeter for standardising comparison lamp intensity Telescopic objective Brightness range selector Exposure time scales Lens aperture scale Film speed scale Push button control Rheostat control
Provenance
Donated to the Fox Talbot Museum by D L Harris.
Makers and roles
Salford Electrical Instruments Ltd., manufacturer Ilford Ltd, distributor