The Competition incorporates ED glass, for superb color contrast correction and high resolution. A remarkable 92% light transmission, approaching the maximum ever achieved in any riflescope. Fast-focus European-style eyepiece. Just 27.8 ounces in weight—24% lighter than our 12-42 x 56 Benchrest, and over 20% lighter than our former 12-42 x 56 NXS riflescopes.