Zeiss literature boasts that the 10x42mm Conquest HD has “the largest field-of-view in its class,” reported to be 345 feet at 1000 yards. The larger the viewing area, the easier it is to track subjects without moving the optic. Without the optic, I could not differentiate tree trunks from darkness more than 50 feet into the timber!Ī large field-of-view (FOV) ranks high in value for hunters, and birders as well. Nevertheless, Conquest HD images were clear enough to identify two spike bulls with the cows. Five minutes later – and well after legal shooting light – the elk were more than 200 yards away and I could see only parts of their bodies between trees. I pulled off the roadway and watched as the elk meandered off through the trees. A small herd of elk crossed the road ahead, just as darkness blanketed the tall timber. The value of the Zeiss process was vividly demonstrated for me while driving home through the Apache-Sitgreaves National Forest. This is also important to birdwatchers for identifying bird species and sexes that are sometimes differentiated by subtle shades of color. Sharpness and color differentiation help hunters spot game partially hidden by natural cover, particularly at distance. Why so many layers? This is necessary for sharpness of image detail and insures crisp, clear viewing – even during less than ideal lighting conditions. Prisms are treated with proprietary Zeiss dielectric coatings for “phase correction,” and more than 70 layers are applied to prevent light loss in the elaborate prism systems. Though popular, roof prisms can create distorted imagery and again, Zeiss coatings come to the rescue. The Schmidt-Pechan roof prism used in Conquest HD models is a proven design that is used by a number of other companies in the production of lightweight, compact roof prism binoculars. This is further evidence that the ED glass and its coatings are top-notch. In bright light, I was unable to detect “fringing” from chromatic aberration – which is the inability of a lens to bring all the wavelengths of color together. Contrast immediately improved however, and varying shades of color became apparent, with the very first rays of natural light. Images were remarkably crisp and bright, considering there was little ambient light and not much contrast between the brownish-gray animals and the dry grass and brush. Well before daylight we located a pair of yipping coyotes with the Conquest HD’s that were feeding on a grassy open plain more than 500 yards distant. This was evident while scouting for turkeys early one morning. Zeiss invented its anti-reflective T* coating more than 80 years ago, and continual refinement insures that unique Zeiss brightness and high-contrast images. The Schott/Zeiss ED glass provides excellent resolution of details, and facilitates both brightness and color distinction, achieved through hydrophobic multi-coatings.
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