LENS COATINGS - Being highly polished, a glass lens not only gathers light... it also reflects it away. And the more that is reflected away, the less you can see through the scope. Lens coatings are used to reduce reflection and improve light gathering. As you look at a coated lens from the side, you will see a colored hue to what is reflected in the lens face. Most coating hues are blue. Some are green. And some are pinkish. Some manufacturers have enhanced coating systems that use multiple coating layers and materials to give even better light gathering and the least possible reflection. Suffice it to say, lens coatings make such a big difference that no high quality optics are offered without them. The best in lense coatings is called: "Fully Multicoated".