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What is the difference between porro- and roof-prism binoculars?

April 26, 2017binoculars roof-prism

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What is the difference between porro- and roof-prism binoculars?

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Porro type binoculars have an angled light path and are the traditional looking binoculars. Roof prism binoculars have a “straight barrel” design and do not angle the light path. Contrary to what you may think, the roof prism type of binoculars typically cost more to produce than porros.