Description
By introducing a new line of monoculars, the Hawke company has paid special attention to the quality of optics, in which the Nature Trek monoculars significantly surpass analogues in their price category and occupy a special place in the optical market adjusted. As befits an optical device of this class, the monocular is equipped with a BAK4 glass prism, has multi-coating on all optical surfaces, is completely waterproof and nitrogen-free, has a rotating-hanging headpiece, and comes complete with accessories. About those that have an effective high-quality device, you can testify about the presence of a phase-correcting prism coating, which is not true for all monoculars in a high price category. In fact, these devices may provide greater performance than the smaller Nature Trek series binoculars, and at the same time lose one of the most compact optical devices for a spare field.
Phase Correction is a special phase-correcting coating that is applied to one of the surfaces of the prism wrapping system in the appearance of very thin balls. Phase correction is also necessary for the Roof optical system; fragments passing through such a prism, the light flow is decomposed into two parallel beams of light fibers, and the phase displacement occurs by half the amount light color, which leads to a change in the separation of the image, as well as a decrease in contrast. Phase Correction corrects the error. As a result, the image is as clear and contrasting as possible. The quality of such a coating is very high, and the application process requires precision precision, which is so technologically advanced that optics manufacturers can only afford it. Today, without a phase-correcting coating, the design of a high-viscosity optical device of the Roof prism system is practically inconceivable. 
The highly spherical wide-smooth coating of Hawke optics, however, ensures high light transmittance across the entire visible spectrum and provides high contrast and color rendering in natural tones.
BAK4 (Barium crown) is a special type of optical glass, which is used for the production of prisms for optical devices. This material has a lower dispersion coefficient (light dispersion), which is less suitable for budget models. As a result, chromatic aberration is noticeably reduced (iris at sharp intervals between the transition from dark to light). In addition, a clear indicator of light bending allows you to eliminate vignetting (the phenomenon of trimming the light beam along the edges), which ensures uniform lightness of the image across the entire field of view. 
Waterproof - means that the optics are sealed with a strong O-ring and protected from the penetration of moisture by being enclosed in a core extending 3 lengths to a depth of 1.5 meters. A static pressure at a depth of 1.5 meters does not affect the fit of the vehicle and does not affect its functionality. Such options are not scary in any weather mind.
Fogproof - means that the body is filled with dry nitrogen N2 in the middle, which prevents condensation of moisture on the internal surfaces at a temperature gradient, daily fogging in the middle, and therefore does not cause corrosion of the materials the vologgers are pouring in. The air is removed from the device and replaced with an inert gas (in this case, nitrogen N2), which does not allow water vapor in its storage and does not condense.
Today, polycarbonate is increasingly being used for housings of optical devices. This material is completely justified by its minimal strength, chemical, thermal, mechanical resistance and ease of processing. Polycarbonate housings are lightweight and shockproof. The stench does not attract additional expensive finishing treatment, such as anodizing or prefabricating.
The package includes an eyepiece cover and a lens cover with mounts on the body. The case is extra thick, has thick stretch inserts for snug holding of the monocular, closes with Velcro and can be attached to a belt.
Lens cover with mounts on the body
Eyepiece cap Wrist strap
Soft nylon case with belt clips for transportation
Servet for cleaning optics Material: Polycarbonate with humic coating Lenses: Fully Multi-Coated Field of view at 1000 m: 105 m Luminosity: 6.25 Real cut corner: 5.5° Brand: Hawke
