10x42 Bx-4 Pro Guide Hd Binoculars

Image quality is enhanced through the use of phase-corrected coatings on the prisms. The lenses are made of high-transmittance calcium-fluoride glass, which, by their nature, limit reflection and increase color fidelity and contrast. The Twilight Max HD system complements the glass with index-matched lens coatings that were specifically engineered for the calcium-fluoride lenses to raise the already-high transmittance across the entire visible spectrum, with special emphasis on the blue and violet wavelengths that are most prevalent in low light, such as at dawn and dusk. Their 42mm objectives gather generous amounts of light to further boost performance in less-than-ideal conditions without the bulk and weight of larger objectives, while a wide angle of view helps to reduce the appearance of distracting hand shake that is often associated with powerful optics. All of these optical features work together to present the user with a comfortable and immersive observational experience.