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BINOCULARS

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Binoculars are very useful optical instruments for observing distant objects, both in navigation and in other outdoor activities such as nature observation, bird watching, astronomy, or even in sporting and hunting. Their primary function is to magnify the image of distant objects using two prisms that reflect light and focus it onto a lens.

Types of Binoculars


General observation binoculars : They are versatile and suitable for activities such as bird watching, trekking, sporting events, etc. They usually have a magnification ranging between 8x and 10x , with an objective diameter ranging from 30 to 50 mm .

Marine binoculars : Designed specifically for marine conditions, they are waterproof , scratch-resistant , and often feature image stabilization . They offer lower magnifications, such as 7x50 or 8x42 , to ensure a stable, clear view even when the vessel is moving. They are also designed to reduce the double vision effect caused by waves.

Astronomy binoculars : These binoculars generally have higher magnifications, such as 10x50 or even 15x70 , and larger objective lenses. They are ideal for observing the night sky, but require a stable stand or tripod to reduce shaking when observing distant objects in the sky.


Compact binoculars : Smaller and lighter, with magnifications typically ranging from 8x25 to 10x25 . They are easy to carry and suitable for light hiking, travel, or general outdoor activities. Although they have a narrow field of view, they are ideal when portability is a priority.

FAQ

What to consider when buying binoculars?

Intended use : Consider the main purpose for which you will use the binoculars. If you need them for navigation, marine binoculars with good image stabilization and waterproofing are ideal. For bird watching or nature photography, binoculars with moderate magnification (8x or 10x) are perfect.

Size and weight : Larger, more powerful binoculars tend to be heavier. If you need binoculars you can take with you everywhere, a compact model might be a better fit.

Comfort and ergonomics : Make sure the binoculars are comfortable to hold and easy to adjust. Models with adjustable lenses are especially useful for those who wear glasses.

Quality optics : The quality of the lenses and prisms greatly affects the clarity and sharpness of the image. The best binoculars feature multi-coated lenses and BaK-4 prisms for excellent image quality.

What are the main features of binoculars?

Magnification (Zoom) : The magnification power of binoculars is expressed with two numbers, for example 8x42 or 10x50 . The first number indicates the magnification factor, or how much larger an object appears than we see it with the naked eye. For example, 8x binoculars magnify the image by eight times.

Objective Lens Diameter : The second number, such as 42 in 8x42 binoculars, indicates the objective lens diameter in millimeters. Larger objectives (e.g., 50 mm ) allow for more light to be gathered, improving visibility in low-light conditions, but also increases the weight and size of the binoculars.

Field of view : This is the area that the binoculars can cover at a given distance, usually measured in degrees or meters at a certain distance (e.g., 1,000 meters). A wider field of view is useful for more dynamic observations, such as during sporting events or on the open sea.

Exit pupil : This is the diameter of the light that exits the binoculars and enters the eye. It is calculated by dividing the objective lens diameter by the magnification (for example, a 10x50 will have a 5 mm exit pupil). A larger exit pupil is more useful in low-light conditions.

Image stabilization : Some binoculars, especially those for marine or long-distance viewing, offer image stabilization. This helps reduce the effect of hand shake, which can make it difficult to maintain a steady image.

Waterproof and Durable : High-quality binoculars, especially those used for marine or outdoor activities, are often designed to be waterproof and fogproof , thanks to the presence of nitrogen or argon gas inside. These models are rugged and shock-resistant, ideal for withstanding harsh conditions such as rain or exposure to sea salt.
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