Scheme Porro consists of 2 x regular rectangular prisms (e.g., BOC 15х50). It makes the offset of the optical axis of the lens that increase the stereo base. In the scheme of Roof, typically used the system of Schmidt-Pehan (for example, the MINOX BL 8x42 BR). It allows you to create a more compact binoculars without displacement of the optical axis of the lens. Beam path in the prism of the Schmidt-Pehan more than in porro prisms , so the demands on the transparency of the glass is higher than Roof prisms. In expensive series of binoculars Carl Zeiss (for example, Carl Zeiss 10x56 T*FL Victory) uses a system of prisms Abbe-Koenig ensure the best light transmission and preserving the compactness of the binoculars with the Roof prism.
When observing a significant contribution to the deterioration in the image quality makes the hand shake. To reduce this effect, manufacturers offer different solutions. For example, the Canon between the lens and the porro prism placed in a special stabilization system based prism with a variable angle. After the rejection of the optical axis of the device microprocessor system detects a displacement and actuates the mechanism of stabilization of the shape of the prism changes and deflects the light beam to compensate for the deviation. The system response time of the order of 1/1000 sec. In our online store you can buy any binoculars from budget to High End.
Virtual binoculars from MINOX. - a simple explanation of designs and concepts -ability to assess the quality of an image depends on the geometric characteristics of binoculars
STURMAN shop carries out the wholesale selling binoculars on favourable terms in Moscow. Here You will find high quality products from reliable manufacturers in various price categories etc.
If You are thinking where to buy binoculars wholesale, STURMAN offers a number of advantages that speak in our favor:
our company is a distributor of many manufacturers of optical instruments, proof of which can be found on their official websites;
for the above reason we offer only high-quality products and low prices;
thanks to our own large warehouse, the desired product is always available;
we provide a rapid delivery;
only our store offers a unique shopping environment: if our goods have not sold, You can return it to us.
To check the product availability for ordering and the price of binoculars in bulk, You can by phone in Moscow: +7 (495) 989-10-56.
Compact binoculars 8x21 Sturman (silver) for daily observations - Magnification 8x, diameter of lens 21 mm - The field of view of 7.2° (125 m/1000m), exit pupil distance: 14 mm - Roof prism glass Bk-7 Lenses with anti-reflective coating The Central focus at a distance of 2 m - Aluminum rubberized casing of the type "Open Hinge", color - silver metallic, soft eyecups zamorachivayas - Comes with neck strap and case
Lightweight and compact binocularsSturman 7x18 Free Focusto everyday observations: - Increase 7x, diameter of lens - 18 mm - Field of view is 7.3 degrees (128 m/1000m), exit pupil diameter - 10 mm - Prism Roof - Fully multicoated lenses and prisms Is focusing Focus free - Housing made of impact resistant plastic with a rubber / paint coating (optional) - Comes complete with neck strap and case