Before the advent of the ASA system, the system of Weston film speed ratings was introduced by Edward Faraday Weston (1878–1971) and his father Dr. Edward Weston (1850–1936), a British-born electrical engineer, industrialist and founder of the US-based Weston Electrical Instrument Corporation, with the Weston model 617, one of the earliest photo-electric exposure meters, in August 1932. The meter and film rating system were invented by William Nelson Goodwin, Jr., who worked for them and later received a Howard N. Potts Medal for his contributions to engineering. COUNT 5
QSN1 What system was used previous to the ASA system? ANS1 the system of Weston film speed ratings QSN2 Who devised the Weston film speed ratings?  ANS2 Edward Faraday Weston (1878–1971) and his father Dr. Edward Weston (1850–1936) QSN3 What company did Dr. Edward Weston start?  ANS3 the US-based Weston Electrical Instrument Corporation QSN4 When was the Weston model 617 created? ANS4 August 1932 QSN5 Who is credited with creating the film and meter system? ANS5 William Nelson Goodwin, Jr.