Roof prism, Porro prism, and reverse Porro prism binoculars each use image-erecting prisms to provide correctly oriented images. Without prisms, the image would always appear upside down and reversed. Most of us recognize the Porro prism as a “classic” binocular design with offset prisms while the roof prism binocular is shaped like an H: more [...]
Archive for September, 2010
Otter Delight
So there I was, paddling my kayak around a mist-covered lake in northern Wisconsin one recent morning, thinking about times in my life when I’ve been grateful to have my trusty binoculars close at hand. (I couldn’t remember any time when I’ve regretted bringing binoculars along; but there have been occasions that I cursed [...]
All About Optics.com: New and Improved!
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