Context: Based on earlier research work by Loyd Ancile Jones (1884–1954) of Kodak and inspired by the systems of Weston film speed ratings and General Electric film values, the American Standards Association (now named ANSI) defined a new method to determine and specify film speeds of black-and-white negative films in 1943. ASA Z38.2.1-1943 was revised in 1946 and 1947 before the standard grew into ASA PH2.5-1954. Originally, ASA values were frequently referred to as American standard speed numbers or ASA exposure-index numbers. (See also: Exposure Index (EI).)

Question: Who pioneered research that led to the new ANSI values?
Answer: Loyd Ancile Jones

Question: What standards were the ANSI developed from?
Answer: Weston film speed ratings and General Electric film values

Question: What types of film did the ANSI measure?
Answer: black-and-white negative films

Question: When did the ANSI define its new measure?
Answer: 1943

Question: What were ANSI values often called in the beginning?
Answer: American standard speed numbers or ASA exposure-index numbers

Question: Who did research for General Electric?
Answer: Unanswerable

Question: What was Kodak renamed as?
Answer: Unanswerable

Question: What were the Weston Film speed ratings inspired by?
Answer: Unanswerable

Question: When did Jones publish his research?
Answer: Unanswerable

Question: When was ASA PH2.5-1954 released?
Answer: Unanswerable