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Considerations for Beginners Buying Monoculars
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Magnification: The larger the magnification, the farther you can see, but at the same time, the hand tremor will be magnified, which is easy to cause dizziness.night vision monocular ， It is recommended to buy 7-10 times.
Aperture: The larger the aperture, the more light is collected and the sharper the appearance. The larger the aperture, the greater the weight. In addition, the larger value is used for stargazing and bird watching, and it needs to be fixed in brackets.
From the perspective of prism material, those cheap monoculars are likely to be made of BK7 material, which has low light transmittance, dull effect, and no sharpness, while BAK4 has good light transmittance and clear and bright images.
Looking at the anti-reflection film, the more anti-reflection film, the clearer the image. Generally, the mirror surface of the single-layer film is red or blue-violet, the multi-layer film is light green or dark purple, and the thicker single-layer film is green (decorative green film).
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