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It is divided into several parts: 1. If it is handheld, it is generally recommended to choose a double tube. There is no three-dimensional sense of monocular. Holding a telescope, in a formal setting, how can there be a small monocular, this is the reason.
In short, handheld, the small monocular is not recommended.
2. If you have to choose the small, hand-held monocular, then here are a few suggestions for you:
First of all, because of good handheld telescopes, there are basically no monoculars. In other words, monoculars with hand-held telescopes, few are better. So, don't buy the expensive ones, just buy the cheap ones. Because it's expensive, it's a mess to ask for a price if you don't get it right.
Secondly, if you want to choose, choose a fixed multiple, don't choose the kind of zoom handheld telescope, similar to what 15-45x21 and so on, are used to induce people who are not familiar with the telescope. It doesn't work at all.
Don't be superstitious about foreign brands, what "American bushnell", "Dr. can", "Japanese kenko", to be honest, 99% are fake. Learn more about the basics of discriminating.
In summary, the focus is on identification. 3. Gymnasiums, optical stores, photographic equipment stores, and technology markets can all be looked for. Yes, don't choose those that zoom.
However, there is nothing too good about the fixed times, you just need to follow the basic identification, look at the products that are similar in all aspects to choose = =
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Summary. Hello, 400 yuan can be used, but the effect may be slightly worse. Telescopes are good for looking at planets, and short-focus telescopes are good for looking at deep sky.
Hello, 400 yuan can be used, but the effect may be slightly worse. Telescopes are good for looking at planets, and short-focus telescopes are good for looking at deep sky.
Dear Hello The monocular has a large diameter and a large magnification, which is also the huge advantage of the monocular, and it is also its most attractive place. However, we can't just see the advantages and ignore its disadvantages: monocular **, the brain analysis and recognition speed is slow; ** Narrow range, difficult to find the target; Bulky and unportable; A must-have tripod is an added burden.
Of course, there are also monotubes that are made very small, even smaller than the larger binoculars, which seem to be lighter and ruined. However, such a monocular magnification is still above 15 times, and it still cannot be separated from the tripod, and it is too small, and the diameter of the objective lens is naturally small, and the light enters less, losing its original advantage.
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1. Magnification: The larger the magnification, the farther the distance to see, but at the same time, the hand tremor will also be amplified, which is easy to cause the effect of vertigo, and it is recommended to buy 7-10 times is the best.
2. Caliber: The larger the caliber, the more light is collected, the clearer it looks, the larger the caliber and the weight also increases, it is recommended to choose between 30-50mm, if you have a steady hand, choose the largest, otherwise about 40 is the best. In addition, most of the values greater than this value are used for stargazing and bird watching, and they need to be stabilized with a stand.
3. Look at the material of the grinding prism, those monoculars of dozens of yuan are likely to use BK7 material, which has low light transmittance, dim effect and not sharp, while BAK4 has good light transmittance and clear and bright imaging. Blind counting.
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Evaluate the effect of a hand-held monocular of about 100 yuan Let's see if it's worth the price.
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I said don't use a telescope if you don't need it, you'll be short-sighted if you see more.
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Telescopes below 100 yuan are generally not good to go there, may only be used as toys, and regret buying them, it is better to add some money to buy a better one, such as Boguan Mountain Eagle 8x22 Paul 1050zcy are only more than 100 and practical.
Wuhan Hanyang District Parrot Avenue No. 32-2 (Guqintai Yangtze River Square) 2804 telescope monopoly on the 28th floor.
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1. If you hold it in your hand, I personally feel that the double-tube is better than the single-tube. In addition to the three-dimensional sense, there is also a sense of presence, which is very important.
2. The reason why the double tube is recommended is that there is another reason, the hand-held small monocular, because the technical requirements are low and the production threshold is low, so there are fewer good products, and most of them are very low-grade and unparticular products. There are few good ones, but there are them, but they are not very good-looking.
3. Many of the things you ask are some abstract things, in fact, many things are not so clearly defined, good products, single and double, good merchants and bad merchants, ** and stores are the same. The key is not these, the key is that you should have more understanding of yourself, know some basic discernment and discernment.
4. **** and stores can be, **or** can also be, these are not particular!
For example, from one point of view, it is true that there are ** stores that are cheaper than **. But from another point of view, some ** owners are more concerned about credibility, so although they are doing **, their ** is still almost the lowest, while also ensuring quality and credibility.
And so it is! From one point of view, it can be said that **is more formal, but from another point of view, ** has to give a lot of rent and dividends every year, so in order to survive, they have to engage in some commercial things, which may not even be as good as some ordinary stores.
When I talk about this, you may understand, don't think about this aspect of complicated, it doesn't matter. The key is to understand a little bit yourself.
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Buy a twink! It's better to buy 7-8 times more comfortable to look at! I bought a 10x hand and it was a little shaky!
You can also see the starry sky at night! I bought it in **, the quality is not bad, and the effect exceeds expectations!! Look at the volume or something when buying, there shouldn't be anything wrong with it! Good luck.
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The one upstairs said that the real magnification is only 3-5 times when it is marked as 10 times, nonsense! Generally speaking, 10 times is the regular handheld magnification, 10 times is the ** object magnification ten times, and many people think that there is no ten times, this is because the length and width of the object are only magnified by 10 times, and the area of the figure is magnified by ten times, and the length and width are only magnified by about 3 times. As for monoculars or binoculars, I still recommend twinocculars, the monoculars are far worse than you imagine.
If it's just for fun, not **, that's fine.
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If you want to play, buy a monotube.
If you are watching a game or traveling, it is recommended to use a binocular ......
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Regarding magnification: each telescope is marked with the main parameters, such as 7 35 means that the mirror is 7x, and the objective lens aperture is 35mm. Generally, less than 6 times is a low magnification, 6 10 times is a medium magnification, and more than 10 times is a high magnification.
In fact, the reasonable magnification of a telescope is related to the aperture of the telescope and the way of observation: if the aperture is large, the magnification can be appropriately higher, and the fixed observation with a tripod can be higher than the handheld observation. If you buy binoculars for hand-held observation, 7 10 times is enough, the highest should not exceed 12 times, otherwise the higher the multiple, the smaller and darker the observation field of view, the observation effect will decrease, especially the jitter brought by high magnification is also greatly increased, so that the observed scenery can not be stabilized, and it is difficult to observe normally.
Although there are many varieties of telescopes in various countries around the world, such as the United States and Russia, most of them are mainly 6 10 times, and some of the world's famous brands such as Zeiss and Nikon also produce telescopes with medium magnification, because a clear and stable image is the most important.
About aperture: the larger the aperture, the larger the observation field of view and brightness, which is conducive to observation in low light, but the larger the aperture, the larger the volume and weight, and the higher the cost, which can generally be selected between 30 and 50mm according to the need.
About the field of view: The field of view refers to the observable horizon at a kilometer, such as 1000 93m, which means that the telescope can observe a range of 93 meters wide at a kilometer, which can also be converted into "degrees" to express 5°30. The comparison of the size of the field of view must be carried out under the condition that the aperture is similar and the multiple is the same, the key to the size of the field of view lies in the design of the eyepiece part of the prism system.
About coating: The function of lens coating is to reduce reflection, increase light transmittance, and improve the brightness of observation. The color of the coating is different and has nothing to do with the quality, the lighter the coating and the smaller the reflection, the better, but in recent years, there have been strong reflections on the market, bright and shining various red film, yellow film telescopes, very attractive to consumers, in fact, this inferior coating reflects and loses a lot of light, so that the color is cold and dark, the clarity decreases, and even more people call this inferior red film telescope "can be dark night vision" and "infrared night vision telescope" to deceive consumers, in fact, the real infrared night vision device is photomultiplier tube imaging, Unlike telescopes, they cannot be used during the day, are expensive and require power to work.
Structural materials: In order to reduce costs, most of the ordinary telescopes on the market use plastic mirror bodies and tubes, and only a few high-end products and military models use all-metal structures, which are expensive, but their durability is incomparable.
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, magnification (preferably between 8x and 10x).
The telescope is marked with the words 10 x 42 and 8 x 30, with the former representing magnification and the latter representing the objective diameter. Looking at a bird standing at 100 meters with a 10x telescope is as close as seeing it at 10 meters with the naked eye. Due to the large magnification, the smaller the angle of view, the more difficult it is to search for the target, and the sharpness is more likely to be affected by the shaking of the hands.
When the light is very sufficient, it is 10 times clearer than 8 times; When the light is low, 8x is better than 10x to see the details, so you shouldn't blindly go for high magnification
2. Caliber (should be between 30mm and 42mm).
The larger the aperture, the better, and the diameter of the objective lens affects the amount of light entered. Especially in the case of strong chiaroscuro, morning and dusk, and cloudy, the larger the aperture, the higher the amount of light intake, and the more details can be seen by the eye; But at the same time, the heavier the telescope, the more tired it is to look at it for a long time. It is advisable to choose a larger caliber according to personal physical fitness.
3. Field of view (the bigger the better).
The field of view refers to the range that can be seen from 1000 meters, and the width of the field of view should be higher than 104 meters, which is 6 degrees. The larger the field of view, the faster and easier it is to search for the target. However, the larger the field of view, the more distorted and blurred the edges, the more complex and difficult the aberration correction will be, and the more technical and costly it will be.
4. Color fidelity (the more natural the better).
High-quality telescopes should faithfully reflect the primary colour and colour saturation of the scene. In order to increase the brightness of the telescope, some manufacturers deliberately increase or decrease a certain light wave, resulting in distortion and making the scene blue or red.
Light transmittance and coating are inextricably linked, and have a direct impact on color fidelity. All optical glasses have high light transmittance and multi-layer coating on the whole surface, with high brightness and accurate color reproduction. In general, manufacturers do not publish all the data (it is difficult to do so), and some manufacturers will disclose the light transmittance or coating of local optical glass to mislead consumers.
Performance in use. The best thing to do is to use your own eyes to make observations and comparisons.
1. Depth of field. For bird watchers, depth of field is a more contradictory parameter, large depth of field, do not need to focus frequently, it is more convenient to use, but for observing forest birds, the foreground and background are not easy to blur, and the birds are not easy to stand out. The depth of field is small, although the foreground and background blur are obvious when observing forest birds, and the bird theme is prominent, but as soon as the distance changes, it is necessary to refocus, and the fingers must always be on the focusing wheel, which is more tiring. This depends on personal preference, and there is no set standard.
2. Tightness.
Telescopic telescopes are often carried out outdoors, and the observation environment is changeable, so it is best to choose a telescope that can prevent water immersion (water pressure and waterproof), so as to keep the inside of the mirror sealed and stable, and there is no fog or mildew.
3. Comfort.
Comfort varies from person to person. Generally speaking, for telescopes with a rubber surface, it is not only shockproof, but also more comfortable to hold; The weight of the lens body determines whether it is convenient to use and carry for a long time; Usually, people choose telescopes with high durability and performance.
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Don't be stupid, the magnification is not as big as possible, but to see through the amount of light and the viewing angle, so that it is comfortable.
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