Very often when performing certain types of operations and observation of specific objects located at a significant away from the viewer, human vision is not enough to view a detailed picture. In such cases it’s better just resort to using binoculars – a special device, calculated multiple approach of the object and observation of it. Binoculars are widely used in everyday life, without them not practically no fishing or hunting trip will cost them they take with them to the theater and to various sporting events, involving a significant removal of the viewer from the object of observation. And precisely on how accurate, high-quality and correct binoculars matched to certain conditions depend the pleasure of contemplating an event and the ultimate the result of hunting or fishing.
- The best manufacturers. Which binoculars to choose?
- The principle of operation and types of binoculars
- Amateur or household binoculars
- Professional binoculars
- Selection options. What to look for when buying binoculars?
- Lens diameter
- Approximate ability
- Prism Type and Design
- Linear and angular vision characteristics
- Characteristic of enlightenment
- Exit pupil characteristics
- What binoculars can be considered the best?
- We select binoculars with high magnification
- Choose binoculars for fishing
- How to choose binoculars for observation
- Binoculars selection video
The best manufacturers. Which binoculars to choose?
Although currently on sale presented a huge number of different binoculars, not all of them are suitable for performing the tasks assigned to them. First of all, choosing binoculars, you need to decide for which goals it is acquired, and then determine the class of the device and study the reviews of people who managed to try one or another model in action. Binoculars are a complex optical device that requires manufacturer full compliance with the manufacturing algorithm and maximum build quality, and therefore a quality model to release forces not for everyone. Honored uses the products of the following brands:
As you can see, almost all of the above brands are serious manufacturers of optical equipment, as well as photo and video equipment.
The principle of operation and types of binoculars
Modern binoculars are compact optical devices whose main purpose is to approximate object of observation for the possibility of a detailed examination of it. The functionality of such devices is provided by the series multi-convex lenses and an optical prism that refracts the light flux and narrowing it to a narrow beam, which is perceived by the retina eyes as a full image.
Modern models of binoculars on sale, you can divided into several conditional categories.
Amateur or household binoculars
Compact devices with no super capabilities and perfect for nature watching, going to the theater or to various sports competitions. Approximation like devices is limited to 2-4 krats, and the diameter of the lens, installed in such a device does not exceed 23-25 millimeters.
A wide variety of designs and form factors;
Provide decent peripheral image quality observation;
Not suitable for use in dimly lit areas;
Very often plastic lenses are installed, quickly coming out out of service;
Devices whose purpose is strictly limited to them specifics. Binoculars for hunting and fishing, for sea navigation and rescue operations, military and civilian models. Each device has its own characteristics. magnification, aperture ratio and lens characteristics, and during its development engineers take into account operating conditions and emergency situations, with which will have to face in the course of working with them.
The highest quality workmanship;
The interior space is almost always filled with special gas;
Wide range of sharpness, focal length and eye lenses;
Exclusively proven, branded optics;
Ideal for performing tasks of a certain circle;
Big weight and dimensions;
When working with the device for a long time, they often get tired eyes;
Very specific functionality, suitable for solving only a certain range of tasks;
Selection options. What to look for when buying binoculars?
This parameter is measured at the far end of the binoculars and precisely from It depends on the functionality of a device. Lenses of the vast majority on sale devices range between 30 and 120 millimeters, and the more this value is all the more qualitative, clear and detailed The user will receive the picture. Also a large lens provides better light transmission, and therefore is better suited for use in the dark.
Compact models with a lens diameter of up to 30-50 millimeters – the perfect solution for everyday use, observation of theatrical performances and sports competitions
Models whose lens is equipped with lenses with a diameter of 30-60 millimeters, great for tourism, hunting and fishing;
The most powerful and advanced devices with an 80-120 lens millimeters are professional and suitable for solving complex tasks, observing stars and others highly specialized tasks.
A parameter that directly affects the proximity of the object of observation and the ability to operate the device in certain conditions. A similar parameter has the following regularity: the higher the degree approximation of a specific device, the narrower the coverage angle of a particular devices. It is these two numbers that are displayed in the characteristics any binoculars: for example, the inscription 7×50 means that the binoculars have 7x zoom and at maximum zoom angle is 50 degrees.
Devices with a small approximation, about 4-8x provide wide angle of coverage and are suitable for the vast majority of household situations;
Models with an approximation of 10-15x are great for hunting and fishing;
Devices with an approximation of 20 times or more are great for observation of objects from a long distance. They are preferred by those who likes to watch the stars;
Prism Type and Design
Prism is a key design element of any binoculars, from which depends on the clarity and clarity of the displayed image, as well as the ability to operate the device in difficult conditions. IN most binocular lenses currently installed fall into two general categories:
Porro lenses fit on most models budget and mid-price range. They have a multi-level broken structure and provide refraction of sunlight under angle of about 45 degrees, which gives a wide picture. However they are not can provide strong zoom;
Roof lenses are very close. They have quite compact dimensions and a narrow, elongated shape, which allows you to place them in a small case of binoculars .. Models with such lenses cost 1.5-2 times more expensive than binoculars with lenses Porro.
Linear and angular vision characteristics
Parameters displaying the angle and distance of the clear and contrast picture in horizontal range from the observed object, as well as above it. As a rule, angular vision has range of coverage from 5 to 7 degrees horizontally, which means that the farther from the observer the object will be located – the wider there will be an area of observation. Linear vision is calculated somewhat in another way – it is measured in meters and displays Visibility in height for every kilometer of frustration. Almost always linear vision ranges from 40 to 120 meters.
Characteristic of enlightenment
Indicates the amount of light that remains visible to the eye. person after the light beam passes through the lenses and will refracted by a prism. Typical parameters range from 30 to 50%, and only with the most expensive devices equipped combined lens system, it does not exceed 10-12%
Exit pupil characteristics
In this situation, they mean its diameter, it is from it depends on the amount of light that reaches the retina after processing flow lens and prism. Almost always mountable lenses range from 2 to 5 millimeters, and the larger its area – the sharper and richer the resulting picture will be regardless of the degree of illumination
In addition to all of the above, one should not forget about such characteristics like weight and dimensions of the device. Wear a few hours in a row many-kilogram binoculars to the liking of not everyone, therefore, this parameter should not be overlooked.
What binoculars can be considered the best?
We should not forget that universal models of binoculars are not exists in nature, and this or that model will become the best exclusively to certain conditions of its application
We select binoculars with high magnification
Devices of this class are not suitable for everyone, their functionality is needed for those who prefer beasts and birds, as well as lovers to watch the stars. The best devices of this class are equipped with lenses from Zeiss or Nikon and have an approximation of 20x or more. The output diameter of the lens should be at least 80-90 millimeters, in which case the user will get a truly detailed image in any conditions. The mounted lens is almost always Roof type, and the diameter of the exit pupil is 4-5 millimeters.
Choose binoculars for fishing
Those who are fond of hunting or fishing, in the largest possible magnification is not necessary. A model with 12-15 times magnification and optics with a diameter of the order of 55-70 millimeters. Lens design preferred by Porro and diameter the exit pupil should be all the same 4-5 millimeters.
How to choose binoculars for observation
Devices of this class are almost always peripheral, which certainly means a small multiplicity proximity, wide viewing angle and large output diameter of the lens, transmitting a large amount of light and making the picture clear and contrasting. The lens type is almost always Porro, and the degree the approximation of optics is no more than 4-8 times.
In the following articles, our experts tell you how to choose compass and secrets of choosing a tourist lantern.
Binoculars selection video
Attention! This material is subjective opinion of the authors of the project and is not a buying guide.