I am sure you have noticed the different colors of coatings on your lenses. And today, we are going to explain why the lens manufactures do this. When you look at a lens, especially off to the side, you see beautiful colors of green, blue and even red. A thin coating is vacuum deposited onto the surface of the lens to reduce the amount of … Continue reading WHY ARE THERE “COATINGS” OF COLOR ON MY LENSES?