Leupold 171390: Leupold\'s VX-5HD has blackened lens edges which reduces unwanted glare and diffusion through the lens edges to provide better resolution, improved contrast and superior optical perrformance. The extreme fast-focus eyepiece ensures a generous eyebox, superior field of view and optimal diopter adjustment in the field. It allows the the user to adjust through the full range of diopter adjustment in one complete turn of the eyepiece.