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Christmas Sales Online - Christmas Sales Online 2011Christmas Sale - electronic sales for christmas, lcd sales for christmas 2011, christmas 2011 tv sales, kitchen christmas sale, stand mixers christmas sale, furniture christmas sale, watches christmas sale, digital camera christmas sale and more |
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Specifications:
Tech Talk
Objective Lens: The diameter of the objective or front lens. The larger the objective lens, the more light that enters the binocular, and the brighter the image.
Field of View (F.O.V.): The side-to-side measurement of the circular viewing field or subject area. It is defined by the width in feet or meters of the area visible at 1000 yards or meters. A wide angle binocular features a wide field of view and is better for following action. Generally, the higher the magnification, the narrower the field of view.
Roof Prism System: In roof prism binoculars the prisms overlap closely, allowing the objective lenses to line up directly with the eyepiece. The result is a slim, stream-lined shape in which the lenses and prisms are in a straight line.