smc Multi-Layer Lens Coatings: To improve the overall transmission and resolution, lens-coatings are used to reduce reflection and loss of contrast. With the use of Super Multi Coated lenses, Pentax achieves high efficiency allowing light transmission of up to 98%! The Pentax smc coating is a complex and sophisticated 7-layer coating that corrects light-transmission over the full light spectrum. It is renowned throughout the optical industry.
BaK4 Prism: A prism is a complex optical element necessary to correct the image to right way up, and reduce overall length of the binocular. In a prism, light travels through complicated angles and so the quality of the prism glass used is of significant importance. Pentax uses exclusively high-indexed BaK4 prisms; made of very pure Barium glass.
Challenge the Elements: Pentax is one of the few companies who physically test their sport optics against both recognised JIS norms to classify the degree of resistance to environmental influence. They define and test against: JIS 6; The product is fully water proof and has maximum protection against rain, dust, moisture or internal fogging due to extreme temperature fluctuations. Their binoculars are double O-ring sealed as well as nitrogen purged so that temporary immersion into 1 meter of water will have no negative effects.
Phase Corrective Coatings: In roof prism binoculars, light rays are mirrored several times which can result in reduced light transmission. By adding an additional Phase Correcting coating the light-rays frequencies are corrected to their original values. Pentax use the latest Phase Correction coating on all their roof prism binoculars.
Inner Focusing: The Inner Focus function is critical to low-maintenance and long life guarantee. Exposure to airborne particles and moisture is avoided, thereby ensuring that no outside influences can penetrate the binocular housing and disrupt functionality.