Which is the objective lens? Where is the diopter located? Is it called an eyepiece or an eyecup? Knowledge is power, right? Well, this handy diagram won’t be like a binocular and make you 8x smarter than you were before, but hey, it’s a start. So have at it, and brush up, folks. Oh, and when we say a binocular has bells and whistles, we don’t really mean that!
Originally published on December 5, 2011