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What Does 12x32 And 10X25 Binoculars Mean?
10X32 and 10X25 binoculars are a common specification for binoculars and are described below:
Specification meaning
- Magnification: The number 10 in front indicates that the magnification of the telescope is 10 times, that is, the object observed through the telescope, the angle of view is enlarged 10 times, which enables the observer to see the details of the distant object more clearly.
- Diameter of the objective lens: the numbers 32 and 25 at the back indicate that the diameter of the objective lens is 32 mm and 25 mm. The larger the diameter of the objective lens, the more light it collects, and the brighter the image it creates.
Optical Properties
- Pupil diameter: the diameter of the objective lens divided by the magnification can be obtained, 10 × 32 telescopes pupil diameter of 3.2 mm. 10 × 25 telescopes pupil diameter of 2.5 mm, the larger the pupil diameter, in the darker environment observation, the more light the eye receives, the better the observation, but the daytime use of the impact is not significant.
- Resolution: It refers to the smallest angle of two neighboring objects that the telescope can distinguish, usually expressed in angular seconds, which is related to the optical design of the telescope, the quality of the lenses and other factors, generally speaking, the resolution of a 10×32 telescope with good quality can reach about 7-8 angular seconds.
Structural design
- Prism system: there are two common types of roof prism and Paul prism. Ridge prism telescope tube is more slender, portable, more beautiful appearance; Paul prism telescope has a simple structure, lower cost, better imaging quality and other advantages. For example, Wellwin's 10×32 DT30, DT40 and DT10X25 DT10 are roof prisms.
- Focusing method: Most 10×32 and 10X25 telescopes use the central focusing method, by turning the focusing wheel located in the center of the lens barrel, the focus of the two eyepieces can be adjusted at the same time, so that the observer can quickly and accurately focus on the target at different distances.
- Eyepiece design: The size and quality of the eyepiece will affect the comfort of observation and image quality, some high-end 10×32 telescopes will be equipped with large eyepiece design, Wellwin DT30, DT40 10×32 large eyepiece design ensures that both eyes can focus and observe comfortably.
Applicable Scene
- Outdoor travel: its relatively small and portable characteristics, easy to carry in the travel use, whether it is mountaineering, hiking or camping activities, can be used to enjoy the distant scenery, observe wildlife and so on.
- Birdwatching: 10 times magnification can be used to observe the details of birds' morphology and feathers without scaring them, suitable for birdwatching activities in parks, wetlands, nature reserves and other places.
- Watching performances and sports events: allows the audience to watch the details of the performances on the stage or the games in the stadium more clearly from a distance, to get a better visual experience
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