WordReference Random House Unabridged Dictionary of American English © 2026
expo′sure in′dex, [Photog.]
  1. Photographya figure indicating the proper exposure for a film of a certain speed in a certain light.

'exposure index' also found in these entries (note: many are not synonyms or translations):
Asa - iso

Forum discussions with the word(s) "exposure index" in the title:


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