The first models of the A-Series with ED glass elements (Extra-low Dispersion) ensure a clear, high-contrast view of the image field and effectively compensate for chromatic aberration. Objective lenses with a diameter of 32 millimeters provide excellent visual performance in a compact, lightweight housing. A complete multi-coating and a special coating process optimize light transmission to ensure a bright, clear view of the subject with minimal glare and ghosting. The waterproof construction meets JIS Class 6 standards for reliable use in adverse weather conditions.