Fomei 8x56 DCF LEADER PRO ED FMC

The LEADER PRO ED binoculars are designed for demanding users and professionals. ED technology plus FMC Phase coating on the lenses ensures the highest sharpness and brightness in the High Resolution category. The BaK4 prisms are also Phase coated. The design of the optical system provides a wide field of view. The brightness of the Leader optics allows observation even in the most demanding conditions, including night observation. The body of the binoculars is made of polycarbonate. The binoculars focus from as close as 3 m!

The lens caps are fitted with practical tethers, so there is no risk of losing them. The binoculars are filled with dry nitrogen, which makes them waterproof and dustproof. There is no risk of internal fogging during sudden temperature changes. The binoculars have heavy rubber armor that protects them from damage. The binoculars are supplied with a case and strap.

What is ED (Extra-low dispersion) technology?
So-called ED (Extra-low dispersion) glass is advantageously used in the design of objective lenses. ED glasses are materials with very low dispersion. When light passes through any material, it is refracted at an angle that depends on the properties of the optical material (its refractive index). Since the refractive index of a material varies for different wavelengths of incident light, white light passing through the material is split into a spectrum. A white image is thus split into a set of colored images that differ in size and focus position. It is therefore not ideally possible to focus the image without colored, "rainbow" fringing, which has a major impact on the brightness and edge sharpness of the lens. Some manufacturers (now including FOMEI) use materials with extremely low dispersion (ED glass), i.e. a low dependence of the refractive index on wavelength, in the design of their objective lenses. This makes it possible to minimize chromatic aberration and achieve practically ideal imaging, brightness and edge sharpness. These properties are used in the new FOMEI LEADER PRO ED binoculars.