Home News

To choose binoculars or monoculars?

China Sichuan Tontube Technology Co.,LTD certification
China Sichuan Tontube Technology Co.,LTD certification
Customer Reviews
Good quality products, trusted supplier!

—— VIctor Osorhan

Outstanding product quality & service! We have worked with a lot of companies in Asia, many times the quality is great but the communication is too complicated. In case of Shifang Yuantong Optical Instrument the quality of the products is excellent AND the communication is outstanding easy and fast

—— Matthias Frisch

8x33 Monocular ED I ordered only one as sample. They shipped fast, had in stock. It is of good quality, very sharp optics, focus smooth and fast.

—— Giorgio Pattarini

Very high quality product! Supplier is attentive, knows the business and is always willing to help. Very pleased with the whole process.

—— Ana Silva

Binocular 8x40 Porro FOV 140m/1000m I ordered one piece as sample, and they shipped promptly from stock. Well made product, very sturdy; the prism are mounted into a cradle inside the housing. The objective is recessed and protected. Focusing wheel is a bit hard but precise; eyepieces are stable. Good optics with green coatings, prisms with black c

—— Milucci Christian

I just wanted to say THANK YOU! :-) ^_^You've always responded to all my questions very promptly and with all the details i asked!You worked with me offering different options when appropriate:shipping options, or neck strap options,or boxes, You've always nice to me! so Thank you!!!

—— Ann Byrne

I'm Online Chat Now
Company News
To choose binoculars or monoculars?
Latest company news about To choose binoculars or monoculars?

In terms of observation effect, the effect of the binoculars of the same specification is much better than that of the monocular, the image is full of three-dimensionality, the resolution is higher, the imaging is brighter, and the observation is more comfortable, but the volume and weight of the monocular is more than half smaller than that of the binocular of the same specification. , it is easier to achieve high magnification zoom with a single tube, such as bird watching scopes. Therefore, for hand-held telescopes, binoculars are recommended for better results, and monoculars are recommended for more compact size. If you can use a tripod and want to get a high-magnification zoom effect, a monocular bird watching spotting scope is recommended.


latest company news about To choose binoculars or monoculars?  0latest company news about To choose binoculars or monoculars?  1


How many ways are there to represent the field of view?

Common methods include degrees, xxx meters/1000 meters, xxx yards/1000 inches and other methods. Taking 125 meters/1000 meters as an example, it means that when a telescope is used to observe a target 1000 meters away, the range that can be seen is a circular area with a diameter of 125 meters. In addition, take an 8x telescope with an actual field of view of 7.5 degrees as an example. Although the actual observation range is only 7.5 degrees, because the telescope has an 8x magnification effect, the apparent field of view is 7.5x8=60 degrees, which does not feel cramped. A telescope with an apparent field of view exceeding 60 degrees can be considered a wide-field telescope.


latest company news about To choose binoculars or monoculars?  2

The algorithm and meaning of exit pupil diameter?

Exit pupil diameter = telescope objective lens diameter ÷ magnification, such as 8X30 telescope, exit pupil diameter = 30÷8 = 3.75 mm, if the exit pupil diameter is less than 3 mm, such as 8X21, 10X25 specifications, generally only suitable for the environment with sufficient light Observe below. The diameter of the exit pupil is more than 5 mm. For example, the 8X42 and 7X50 specifications can be observed in low-light environments (dusk, dawn, moonlight, etc.), but the telescope cannot be observed in a completely dark environment.


latest company news about To choose binoculars or monoculars?  3

What is the difference between a Porro prism and a roof prism?

If there is no prism transfer, the image we see is an inverted image. The prisms often used in hand-held telescopes are divided into Porro prisms and roof prisms. Using Porro prisms, the imaging effect is good and the price is low, but the volume and weight are too large. The roof prism is used, which is small in size and weight, but has the shortcomings of double aberration, phase difference, and no total reflection. It is necessary to use high-precision prisms, phase films and high-reflection films to overcome these defects, resulting in relatively expensive telescopes.


latest company news about To choose binoculars or monoculars?  4latest company news about To choose binoculars or monoculars?  5

Pub Time : 2022-05-07 14:19:30 >> News list
Contact Details
Sichuan Tontube Technology Co.,LTD

Contact Person: Miss. Allie Nie

Tel: 18215595193

Fax: 86-28-89346527

Send your inquiry directly to us (0 / 3000)