The sensitivity of photographic film, in ISO/ASA. Box speed is the manufacturer's rating.
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More terms starting with F#
Last updated October 03, 2026 · How we calculate · Sources
Photography glossary
Photography glossary
The sensitivity of photographic film, in ISO/ASA. Box speed is the manufacturer's rating.
Last updated October 03, 2026 · How we calculate · Sources
Try “Sony a7 IV”, “golden hour Paris”, “50mm f/1.8”, “fireworks”, “Portra 400”.