Context: The DIN system, officially DIN standard 4512 by Deutsches Institut für Normung (but still named Deutscher Normenausschuß (DNA) at this time), was published in January 1934. It grew out of drafts for a standardized method of sensitometry put forward by Deutscher Normenausschuß für Phototechnik as proposed by the committee for sensitometry of the Deutsche Gesellschaft für photographische Forschung since 1930 and presented by Robert Luther (de) (1868–1945) and Emanuel Goldberg (1881–1970) at the influential VIII. International Congress of Photography (German: Internationaler Kongreß für wissenschaftliche und angewandte Photographie) held in Dresden from August 3 to 8, 1931.

Question: When was the DIN system established? 
Answer: January 1934

Question: Who created the DIN system?
Answer: Deutsches Institut für Normung

Question: What was proposed at the VIII International Congress of Photography?
Answer: a standardized method of sensitometry

Question: Who presented the idea that grew into the DIN?
Answer: Robert Luther (de) (1868–1945) and Emanuel Goldberg (1881–1970)

Question: Where was the VIII International Congress of Photography held?
Answer: Dresden

Question: When were the drafts by Deutscher Normenausschuß für Phototechnik made?
Answer: Unanswerable

Question: What was the abbreviation for the Deutscher Normenausschuß für Phototechnik drafts?
Answer: Unanswerable

Question: When was Deutsche Gesellschaft für photographische Forschung founded?
Answer: Unanswerable

Question: Where was Emanuel Goldberg from?
Answer: Unanswerable

Question: Who founded the VIII. International Congress of Photography?
Answer: Unanswerable