Their traditional Porro prisms and anti-reflection coated optics maximize the light entering the 40mm objectives to produce bright and clear images with a rich depth of field. A knurled center focus wheel and an elastic polymer armored grip assist handling and give the viewer precise control of the optic, while fold-down eyecups provide comfortable use with or without eyewear. Optical Performance- Comfortable 8x power magnifies the view while preserving the wide exit pupil and generous field of view- 40mm objective lenses boost low-light capability without adding excessive weight and heft- Traditional Porro prism optical path produces a rich depth of field with true stereoscopic vision for a more "3D" viewing experience- 5-element/3-group lens design helps to reduce fringing and distortion, making views appear sharp and flat with little edge curvature- Anti-reflection coated optics improve light transmission, contrast, and color rendition- Wide 60° apparent angle of view reduces the need to move your head side-to-side, so you see more of the scene in front of you
