Lesson plan
DX encoding
109-12, 24 exposures. DX (Digital indeX) encoding is a standard for marking 35 mm and APS photographic film and film cartridges, originally introduced by Kodak in 1983. It includes multiple markings, which are a latent image barcode on the bottom edge of the film, below the sprocket holes, a conductive pattern on the cartridge used by automatic cameras, and a barcode on the cartridge read by photo-finishing machines. The DX encoding system was incorporated into ANSI PH1.14, which provided standards for 135 film magazines for still picture cameras and was superseded by NAPM IT1.14 in 1994; it is now part of ISO standard 1007, whose latest revision was issued in 2000.
Article summary
109-12, 24 exposures. DX (Digital indeX) encoding is a standard for marking 35 mm and APS photographic film and film cartridges, originally introduced by Kodak in 1983. It includes multiple markings, which are a latent image barcode on the bottom edge of the film, below the sprocket holes, a conductive pattern on the cartridge used by automatic cameras, and a barcode on the cartridge read by photo-finishing machines. The DX encoding system was incorporated into ANSI PH1.14, which provided standards for 135 film magazines for still picture cameras and was superseded by NAPM IT1.14 in 1994; it is now part of ISO standard 1007, whose latest revision was issued in 2000.
Key claims
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Discussion questions
- Summarise the article in your own words. Which single claim would you verify first, and why?
- Which claim in this article is most likely to be revised as the sources update? How would you check its current status?
- If two sources disagreed about one of these facts, what would you need in order to trust one over the other?
Bibliography
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Key claims and bibliography are generated from the same tracked claims and sources as the article page.