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Styrka designed their 8x42 S5-Series Binocular as an instrument that combines optical performance with rugged construction to give hunters a valuable advantage in all weather and lighting conditions. Its 8x magnification provides users with a larger field of view and angle of view over higher-power binoculars for a more immersive viewing experience. Larger 42mm objectives gather more light than smaller objectives without making them too large and cumbersome to carry all-day with a full pack of gear. Its optical performance starts with the fully multicoated optics that employs the proprietary SXL anti-reflective coatings to increase image brightness, sharpness and contrast with true color rendition. The BAK4 roof prisms are phase-corrected and dielectric coated to further improve image quality, contrast, and light transmission.
Complimenting their optical performance are construction details that make it an ideal companion in all weather and conditions. The housing is nitrogen filled to make them fogproof with extreme changes in temperatures, and O-ring sealed to give them an IPX7 rating allowing them to be submerged to a depth of 3.3' for up to 30 minutes. Rugged armoring protects the binocular from drops and impacts while providing a slip-resistant grip - especially in cold and wet weather. A large center focusing wheel enables precise control even while wearing gloves, and tethered objective covers and ocular rainguard ensure that you won't lose them in the field during use.
BAK4 roof prism optical path
Highly reflective dielectric prism coatings increase contrast and light transmission
Phase-corrected prisms improve image quality and color rendition
Fully multicoated optics with SXL anti-reflective coatings to increase image brightness, sharpness and contrast with true color rendition
341' field of view at 1000 yd
52° apparent angle of view
Use and Handling
Closed bridge configuration
Large ribbed center focus wheel
±4 right-eye dioptric correction
Twist-up rubber eyecups
58-72mm interpupillary distance
19.5mm long eye relief
5.25mm exit pupil
Rubber armoring provides external protection and a secure grip
IPX7-rated and nitrogen-filled for water and fogproof performance
Submersible to 3.3' for up to 30 minutes
Tethered objective lens covers and ocular rainguard