I keep seeing 40×60, 12×50 and 10×50. What do they mean and what would be the better option for different applications?
In: Technology
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, 10 times closer) and the second number is the size of the objective lens measured in millimeters going across the lens. The size of the objective lens will determine how much light the binocular can obtain for effective viewing. The higher the number, the larger the lens; in effect allowing more light to pass through thereby projecting a brighter image and viewing experience. However, binoculars with smaller lenses are more compact and portable.
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