i mean how do i know if it cn see things 100 meters or 20 meters away , how do i know based on the spects if it can see things from afar that are more than 100 meters or more away
i mean how do i know how far can my binocular be able to view from afar,
and where and how can i understand its spects and how much does one cost, i mean in peso value.
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Most binoculars have a basic spec that reads something like ‘7X35′ or ‘10X50′. The first number is the magnification, and the second number is the size of the front lenses, so ‘7X35′ means that the image you see is magnified 7 times, and the diameter of the lens is 35mm. Lens diameter is important if you’re viewing things in low light (i.e. astronomy.) The higher the magnification, the less you see in the field of view at one time. Also, the higher the magnification, the more the image dances around, especially if you’re just holding them in your hands.
Checking the internet for prices is a good idea, but I’d recommend going to a store and trying out a pair: there’s a lot of variance in quality. Cheaper binoculars often have colour fringes, loose focus wheels and just lousy image quality in general. Like anything else, you get what you paid for.
If you are going to carry them around with you without using a tripod to steady them, the absolute maximum magnification you will want to buy is 10 power. The binoculars will say something like 10×40, where the 10 is the power. That means they will magnify the image 10 times. The 40 refers to the diameter in mm of the objective lense, the large lense. Many people prefer 8 power because they can not hold 10 power steady enough. So if you are looking at a object 100 meters away through 10 power binoculars, it will appear as an image only 10 meters away. With 8 power it will appear as an image about 12.5 meters away. I use both 8 and 10 power. Frankly I can not tell the difference.
If you wish you can spend a lot of money on a pair of binoculars up to $1700 or perhaps even more. For most people, however, a pair of $100 binoculars will be fine. For many even a pair of $50 binoculars. The more expensive have of course better features, such as waterproofing, long eye relief, wide field of view, locking diopter adjustment, close focus, screw up eye cups, and other features besides.