When using binocular optics in harsh environments such as rain, snow, and salt air, it is important to minimize condensation within the lenses. Water droplets that form inside the lens will leave streaks or spots when they evaporate, and these marks will be permanent. Fortunately, most binocular makers today offer sealed optics with a nitrogen charged chamber. Nitrogen is a dry gas which will eliminate condensation inside the lens chamber. Make sure your binocular optics have this important feature. These tips should help you in selecting the best waterproof binoculars for your needs.
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