The opticron t3 trailfinder 8x42 roof prism binoculars deliver the perfect blend between quality and usability trailfinders combination of wide angle optics and fast focus system fitted into a portable rubberised body create a comfortable easy to use pair of binoculars suited to general wildlife observation as well as more specialist pursuits such as hunting and sports the opticron 8x42s feature an 8x magnification 42mm objective lens diameter a minimum focusing distance of 15m and a