DX encoding
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DX 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 th
135 Film Cartridge with DX barcode (top) and DX CAS code. The CAS code shows this is (top row) ISO 125 film, (bottom row) 24 exposures, +3/−1 f-stop exposure tolerance. The DX barcode reads 017563, showing DX number 109-12, 24 exposures.
Codes on Kodak ISO 400 color negative film
Agfa APX 400, cartridge number 017712
DX film edge barcode; data track decodes to DX number 47-1 (Agfa Perutz Primera 200), frame 22A
Barcode
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A barcode or bar code is a method of representing data in a visual, machine-readable symbolic form. Initially, barcodes represented data by varying the widths, spacings and sizes of parallel lines. Th
DX encoding
…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…
Barcoded rolling stock in the UK, 1962
Snack vendor on the Shinkansen train scans a barcode.
Barcoded parcel
GTIN barcodes on Coca-Cola bottles. The images at right show how the laser of barcode readers "see" the images behind a red filter.