Photography. Black-and-white pictorial still camera negative film/process systems. Determination of ISO speed Ingestion-build-183511 Such products need to be

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Photography. Black-and-white pictorial still camera negative film/process systems. Determination of ISO speed Ingestion-build-183511 Such products need to be1 Scope This International Standard specifies the method for determining the ISO speed of black and white negative camera films used for pictorial still photography. This International Standard applies to films processed in conventional chemicals and equipment, but also to those processed using special procedures such as those involving activators or heat for development. This International Standard does not apply to motionpicture, aerial photography,