Binoculars have three main parts: the objective lens, prisms and the ocular lens. Binocular lenses are thicker in the middle and taper out to a thinner edge, which bends light toward the middle. These ...

A hefty pair of premium binoculars with locking diopter, plenty of eye relief and large-diameter 50mm objective lenses make these great for wide-field use in low light. Why you can trust Live Science ...

Who said astronomy binoculars have to be big? These quirky pocket-sized ‘constellation binoculars’ offer just 2.1x magnification yet with 44 mm objective lenses let a lot of light in. The result is an ...