I tried the Mercenary sunglasses with Prizm Golf lenses for this review and found them to be exactly as advertised: they enhance colour and contrast and deliver the goods in a variety of weather ...

The general principles of the instrument may appeal to a wider circle and are sufficiently well illustrated by the two simplest forms Bailed, respectively, the prism and the lens interferometer.

The EVZero Range are the brand's latest pair of lightweight sunnies, and come packed full of optical and material tech, including Prizm lenses (which we'll get onto later). The EVZero Range ...