The specific selection method is as follows:
1. Strength
Telescopes are mostly used outdoors. The plastic shell is not very protective, and it is also easy to roughly shift the prism group due to the temperature change. It is necessary to know that as long as the parallelism of the visual axis of the eyes is slightly deviated, the use of time will make the eyes tired and uncomfortable, even headaches, and nausea. .
2. Weight and feel
The binoculars should not be too heavy. Otherwise, long-term use will make people tired, shaking hands and unable to see the target. At the same time, the binoculars should not be too light, otherwise it will be difficult to operate and watch stably due to shaking. With Swarovski’s ergonomics, all products have a good sense of balance and a first-class feel, which makes the optical performance fully play.
3. Magnification (should be between 8 times and 10 times)
The telescopes are marked with words such as 10X42’8X30, the former represents the magnification, and the latter represents the diameter of the objective lens. Using a 10x telescope to see a bird standing at 100 meters is as close as looking at 10 meters with the naked eye.
4. Generally, the handheld should not exceed ten times. Because the multiplier is too high, it is easy to be too jittery and unable to see the target, especially for military use. There are almost no more than ten times at home and abroad, so don’t think that military use is high multiplier. You usually use 7- 8 times is the best, because a high multiplier generally means that the field of view is narrow and the field of view is very narrow.
5. If you just look at the scenery, travel, 8*40 is already the limit, 7*50 is too heavy, it is not recommended.
refractor