With a high magnification that enables users to make detailed observations of distant subjects, Alpen Optics' 10x42 Teton ED HD Binoculars combine a slim ergonomic form factor with thoughtfully engineered optical features for an ideal companion to today's long-range riflescopes.

The optical performance starts with large 42mm objectives to boost performance as light fades, with extra-low-dispersion (ED) glass elements and phase-corrected and metallic-coated BAK4 Abbe-Koenig roof prisms. These help to correct spherical and chromatic aberrations—producing bright and clear high-contrast images with accurate color representation without distortion across the entire wide field of view in all light conditions. The generous field of view combines with the comfortable eye relief and exit pupil to help minimize the appearance of distracting hand shake commonly associated with high-power optics, while presenting an immersive observational experience from dawn to dusk.