Birder's Guide

NOV 2017

Birder's Guide is the American Birding Association's newest publication. Each issue focuses on a key subject, providing tips from experienced birders on a wide variety of topics like Travel, Listing & Taxonomy, Gear, and Conservation & Community.

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Page 7 of 51

Binocular designs are similar in principle, a series of lens elements are mounted in a plastic or metal chassis, with a focusing mechanism and a means of adjusting to each eye. The dramatic range in prices is directly related to the difference in the raw materials, intensity of craftsmanship, and labor involved in crafting each piece. Obviously, to make the least expensive products, major sacrifices need to be made. At the highest levels one can expect the finest components and workmanship culminating in a true lifetime product with superior performance and maximum enjoyment and eye comfort. Manufacturing the highest quality glass is a long process, much like creating a fine wine. High-density materials, free of imperfections, allow light to be bent at extreme angles without distortion. These ultra-HD quality glass elements are typically heavier than lower quality glass due to their density. They often contain fluoride (among other elements) and in extreme cases are "slow- cooled" in pressurized cham- bers where the temperature is reduced slowly over weeks. An individual tube may contain as many as 13 individual lens elements, each of which is multi-coated on both sides with doz- ens of individual layers all working together to reduce stray light, eliminate glare, and transmit the maximum amount of usable light. Our strong photographic heritage, including invention of the first 35 mm camera over 100 years ago, insures [ADVERTISEMENT] Leica Noctivid A century of knowledge has come to life Birding industry professionals invariably say the same thing when asked about buying birding optics; "Purchase the best quality product you can afford." Birding binoculars can range in price dra- matically though from about $100 upwards to near $3,000 in price. While all provide the same gen- eral function, magnifying a distant subject, the resultant image and reliability of the products vary dramatically as you'd suspect. AquaDura® coating water and dirt repellent, for use in any weather condition Robust and resistant thanks to rubber-armoured magnesium housing and special varnish for metal parts Sophisticated baffle system for maximum stray light sup- pression and perfect contrasts Narrow optical tubes for comfortable grip with one hand Narrow optical tubes for comfortable grip with one hand

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