How to choose binoculars for outdoor travel

Friends who like to travel know that when looking at the scenery, sometimes many beautiful scenery can't be seen because of limited sight. If our outdoor telescope is no longer a unique product of the military, with the needs of outdoor sports and some professional occasions. Telescopes are slowly entering the homes of ordinary people. As an outdoor sports enthusiast, how should I choose a telescope product that suits me? An ideal telescope for outdoor sports should have the following characteristics: nitrogen-filled waterproof, rubber coating, appropriate multiple and aperture, portable and easy to use, of course, excellent optical quality is the minimum. The outdoor sports here generally refer to hiking and backpacking, and the requirements for binoculars are much more complicated than ordinary tourism. In order to prevent the infiltration of rain, fogging of lenses in cold weather or even dust entry due to poor long-term use, nitrogen-filled waterproof can fundamentally solve this problem. Even if it is thrown into water, some military telescopes without nitrogen-filled seals are actually very good. As long as you don't soak in the water, the general rain, snow and sand can still be dealt with. Unintentional bumping is inevitable when used in the wild for a long time. Telescopes with unsatisfactory design structure or working materials can easily lead to optical damage such as optical axis imbalance. Therefore, it is a very good protective measure to wrap a thick layer of rubber outside the mirror body, which can improve the feel and grip besides shock absorption. Outdoor, telescopes are mainly used to observe the terrain, enjoy the scenery and watch the birds and animals. Considering the requirements of hand shock and optics, it is most appropriate to use a multiple of 6-8 times. As for the caliber, 20-40mm is ideal according to the key points and requirements of use. Outdoor sports itself requires individuals to carry a lot of equipment and supplies. Under the condition that each gram of weight affects their physical strength, it is unrealistic to pursue optical performance unilaterally while ignoring volume and weight. In a sense, the contradiction between weight and optical performance is irreconcilable. The mirror with large aperture and high brightness will inevitably lead to a sharp increase in the overall weight. Therefore, we can only make our own satisfactory compromise between weight and optical requirements according to personal requirements and hobbies. The telescope of roof prism is relatively small in size and weight, which is easy to carry, but the disadvantage is that the price brought by complex manufacturing is relatively high. Some basic optical indexes of telescope have their own definitions for outdoor sports. Resolution: This is the main index. A mirror with poor resolution can help you see the crocodile as a trunk. Exit pupil: It can be simply calculated by dividing the aperture by multiple. The bigger the number, the more suitable it is to catch prey in dark light. Color reduction: Color cast exists in many telescopes, and the general observation may not be so strict, but if it is used for bird watching in the wild, you can't correctly describe the color of bird feathers. Coating: Those fake Russian telescopes with shiny red films on the street really rape the eyes, which makes the light lose sharply, causing the problem of color reproduction and easily leading to uncomfortable glare. The best coating can make you almost invisible in front of the camera. For the choice of outdoor telescope, it is more important to choose a product that suits you. I hope the above suggestions can give you some reference. Extracted from 38-degree light