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There are two main types of binocular design, porro prism and roof prism. ... Most binoculars have a central wheel and a dioptre adjustment for focussing images. Usually located on the right eyepiece, the dioptre adjustment is an important feature used to compensate for differences between the strength of the eyes.
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www.which.co.uk/reviews/compact-binoculars/page/feature...
www.which.co.uk/reviews/compact-binoculars/page/features-explained/
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A guide to some of the more common terms associated with binoculars ... Field Glass - A type of binocular that uses a second lens (instead of a set of prisms) to magnify an object. Field glasses are more durable than prism binoculars, although the magnification strength tops out at about 5x.
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www.binoculars.com/binoculars/binocularglossaryarticle....
www.binoculars.com/binoculars/binocularglossaryarticle.cfm
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I'm very much an amateur astronomer and I'm looking to buy a budget pair of binoculars to observe the night sky. I would be grateful if you could inform me of the minimum magnification strength you would recommend to buy. ... ; You are here: Experts > Science > Space and Astronomy for Kids > Astronomy > Binocular Strength;
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en.allexperts.com/q/Astronomy-1360/Binocular-Strength.h...
en.allexperts.com/q/Astronomy-1360/Binocular-Strength.htm
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Science question: How is the strength of binoculars measured? The strength or magnification of binoculars is measured as a ratio of how large an object appears in the eyepiece to that of the object viewed ... For example, 8x35. The first number (8) is the strength, that is, the image seen through the eyepiece is 8 times...
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wiki.answers.com/Q/How_is_the_strength_of_binoculars_me...
wiki.answers.com/Q/How_is_the_strength_of_binoculars_measured
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How to Choose Binoculars and how to Buy Binoculars? ON SALE ... The diopter adjustment on a binocular allows you to compensate for differences in strength between you right and left eye. Since most people have one eye stronger than the other, this is a feature found on all binoculars except for "focus free" models.
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www.opticsplanet.net/how-to-buy-binoculars.html
www.opticsplanet.net/how-to-buy-binoculars.html
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Binoculars are often specified by a set of numbers such as 7×35 or 8×40, the first number indicates the strength of magnification (how many times closer the subject is to you, 5 times closer, 7 times closer, ... The size of the objective lens will determine how much light the binocular can obtain for effective viewing.
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www.just-binoculars.com/binocular_facts.htm
www.just-binoculars.com/binocular_facts.htm
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Chuck Hawks shares his knowledge about binoculars. ... These include optical considerations like the type of glass selected for binocular lenses and prisms, the design of the eyepieces, the size and type of prisms, care in grinding and polishing the glass elements, and the type and coverage of anti-reflection coatings.
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www.chuckhawks.com/binocular_basics.htm
www.chuckhawks.com/binocular_basics.htm
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bjhgraphics.com/gkdme/binocular.php
bjhgraphics.com/gkdme/binocular.php
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52x 80mm binocular nikon monarch 8x42 binocular review image stabilized binocular pentax binocular 8x21 ucf vivitar corp camera binocular department pentax binocular digital ;
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protechweb.net/mlnsb/nfxyr/binocular.php
protechweb.net/mlnsb/nfxyr/binocular.php
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