Vortex Diamondback HD 12x50 BinocularsVortex Diamondback HD 12x50 Binoculars may be the only 12x50 binocular with a 6' close focus. This view is aided by phase correction and dielectric coated prisms and lens coatings designed to take advantage of the prisms, resulting in increased brightness, sharpness, and color rendition. External lenses are protected by Vortex's ArmorTek scratch resistant and oil and dirt repellent coating. In addition to the 6' close focus, the field of view is 271'