Optical Performance Powerful 10x magnification brings distant subjects in for detailed observations Larger 42mm objective lenses boost light-gathering ability for enhanced low-light performance such as at dawn and dusk or when peering into dense brush Compact roof prism optical path ensures a slim form factor for easier handling without sacrificing performance BAK4 prism glass produces a round exit pupil, with crisp and sharp images free from edge distortion Anti-reflection fully multi-coated optics maximize light transmission to produce bright and clear high-contrast views with accurate color fidelity Wide 61° apparent angle of view presents an immersive observational experience while helping to mitigate the appearance of the distracting hand shake often experienced when holding high-power optics Spacious 320-foot field of view at 1000 yards allows users to view wide areas with minimal head movement