a five-sided prism used in the viewfinder of some single-lens reflex cameras.

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Definition of a five-sided prism used in the viewfinder of some single-lens reflex cameras. in English English dictionary

A five-sided prism used in the viewfinder of some single-lens reflex cameras.
pentaprism
a five-sided prism used in the viewfinder of some single-lens reflex cameras.
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