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Definition of Pentamirror
1. Noun. (photography) A system of three (not five) mirrors used as a cheaper substitute to a pentaprism in the viewfinders of some single-lens reflex cameras ¹
¹ Source: wiktionary.com
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1. Noun. (photography) A system of three (not five) mirrors used as a cheaper substitute to a pentaprism in the viewfinders of some single-lens reflex cameras ¹
¹ Source: wiktionary.com