90% LIGHT TRANSMISSION - Higher definition glass produces 90% to-the-eye light transmission, great low-light performance and excellent target resolution across the entire magnification range. ZEISS T* COATING - Guaranteed brilliant, high-contrast images, particularly in adverse light conditions and twilight. The coating is tuned to each lens individually for maximum clarity. A CLEAR VIEW IN ANY WEATHER - There are always exciting things to be seen in the world of nature, even in wet weather. ZEISS developed LotuTec as a coating for binoculars and scopes that enables a clear and unhindered view in all weather conditions. EXTREME DETAIL with ZEISS FieldFlattener Technology to show extreme edge sharpness, even at wide fields of view and Ultra-HD Concept to give maximum detail and color fidelity. ULTRA LIGHTWEIGHT COMPACT DESIGN thanks to the lightweight magnesium body and reduced lens diameter combined with the closer spacing to make the SFL 19% lighter and 17% shorter than the Victory SF 42. ZEISS SFL 50s (SmartFocus Lightweight) represent an outstanding breakthrough in binocular technology. You can now enjoy the optical performance and benefits of a 50 mm objective binocular in a 42 mm frame size. The Ultra-High-Definition (UHD) Concept ensures true-to-life color reproduction and the highest level of image detail. The 50 mm objective and larger exit pupil, combined with 90% light transmission, provide an appreciably brighter image by allowing 42% more entry light. Thanks to its SmartFocus Concept, the focus wheel is perfectly positioned and enables fast and precise focusing. These premium optics will change the perception as to what an ideal binocular should be in the hunting, nature observation, and birding communities.