After weighing and measuring the binoculars, we evaluated them in the following eight categories: Resolution Zavislan set up two poster boards, one in the sun and another in deep shade, each with 1951 USAF Resolution Test Charts in varying contrasts, as well as two color artifact tests. From 100 yards away, testers recorded values corresponding to detail resolved and color shift perceived. Perceived Image Quality Testers judged each model's image for ease of use, feeling of immersion, clarity, and visual artifacts, including stray light and apparent field curvature (or blurring at the edges). Low-Light Performance This category aggregated exit pupil, deep-shade resolution, and light transmission, as measured by Zavislan. Design & Build Zavislan evaluated features and subjected each unit to a drop test; he also measured collimation and focus backlash and wander. Weather Resistance We submersed each binocular in a 5-gallon bucket, and then froze them for an hour, rating the effects each time on image and functionality. Ergonomics We judged overall feel in the hand, as well as the quality, feel, and functionality of the focus wheel, eyepieces, diopter adjustment, and lens covers. Handling The lighter and more compact, the better. Value Performance divided by price. We scored each binocular on a 1 to 10 scale for every category, and then doubled the key ones of resolution and image quality for a total possible score of 100.—D.H.