The straight viewing Knight T80 ED-APO 20-60x80 Spotting Scope from Snypex combines a large objective with extra-low dispersion (ED) apochromatic (APO) lenses and anti-reflection fully multicoated optics to produce a spotter that can be used in the field or at the range in all lighting conditions. The APO-ED lenses correct for spherical and chromatic aberrations to create high-contrast images with true color transmission and reduced distortion, especially at the edges of the field of view. Its large 80mm objective increases the low-light performance for spotting game and wildlife at dawn and dusk, or in heavily wooded areas with a thick canopy. Anti-reflection optical coatings further help with the low-light performance by reducing light loss, so views through the scope are bright and clear. On the right side of the housing is the dual focus wheel system. A large course focus wheel brings subjects into focus fast and then the small inner wheel can be used to precisely focus with pin-point accuracy. The housing is nitrogen-filled for water and fogproof performance, and a twist-up eyecup allows for a custom eye relief with or without eyewear.