Astronomical observation, Concert/competition, Natural observation, Night watch, Outdoor activities, Scientific research activities, Object observation, Other, Children's popular science
Prism Material
Dual BaK4-HT (High Transmission) prisms
Lens Material
Dual ED (Extra-low Dispersion) lenses + 4 Lanthanum lenses
APO (Apochromatic) optical structure with two imported Hoya ED lenses for superior chromatic aberration correction
Strehl Ratio > 0.89 ensuring high image clarity and minimal chromatic aberration
FBMC multi-layer coatings including DC dielectric coating, PC phase coating, and WR hydrophobic coating
Enhanced anti-reflective coatings on all glass surfaces, including bonded surfaces, with single surface reflectance rmax < 0.15% (420-680nm)
Prism coatings upgraded to half-penta + roof prism all made of BaK4-HT for excellent light transmission
Light transmission rate up to 92% for crystal-clear images
Wide-angle optical system with over 70° apparent field of view (FOV) across the series, achieving BSV-7-SWA wide-angle standard
True field of view (FOV) and apparent field of view (AFOV) by model
Item
Detail
8x42
159 m/1000 m, 9.1° AFOV
10x42
137 m/1000 m, 7.8° AFOV
10x50
131 m/1000 m, 7.5° AFOV
12x50
112 m/1000 m, 6.4° AFOV
12x56
109 m/1000 m, 6.2° AFOV
15x56
93 m/1000 m, 5.3° AFOV
Central focusing system with titanium-colored metal focus wheel
Full focus rotation approximately 1.5 turns for precise adjustment
Close focus distance varies by model (2m to 4.5m)
Additional details
Eye relief
18 mm adjustable eyecups with 5-level long eye cups, suitable for eyeglass wearers and non-wearers
Twist-up and removable eyecups for easy cleaning and maintenance
Magnesium-aluminum alloy integrated body for lightweight and robust construction
Additional details
Waterproof rating
BSW-7 (1 meter water immersion for 30 minutes without damage)
Anti-slip dragon scale texture design for secure grip with or without gloves
Additional details
Operating temperature range
0 to 800° diopters vision compensation, suitable for users with myopia up to -800 degrees without glasses
Built-in smartphone adapter with easy 4-step operation (insert card, push, lock, press) for smartphone photography through the binoculars
Hidden tripod mount for stable use
Detachable objective lens caps integrated with rubber for protection and convenience
Additional details
Wide range of coatings
BSC-8888/DC/PC/WR high-brightness coatings for enhanced image brightness and clarity
Optical glass meets international environmental standards, free of lead and arsenic
Additional details
8x42
925 g, 157×133×60 mm
10x42
935 g, 157×133×60 mm
10x50
1070 g, 178×140×60 mm
12x50
1080 g, 178×140×60 mm
12x56
1180 g, 200×145×70 mm
15x56
1190 g, 200×145×70 mm
Ideal for professional bird watching, wildlife monitoring, and field surveys, especially the new 15x56 model with higher magnification and larger objective lens for enhanced brightness and detail in low-light conditions such as dawn, dusk, and night observation.
Additional details
BSR-9-UHD
Ultra HD, center resolution <175"
BSR-7-FHD
Full HD, center resolution ≤210"
BSR-5-HD
HD, center resolution ≤280"
BSR-3-SD
Standard Definition, center resolution ≤350"
BSR-1-PD
Basic Definition, center resolution ≤420"
The Qinglong series binoculars are designed to deliver an immersive viewing experience with ultra-wide fields of view, exceptional optical clarity, and robust build quality, making them suitable for a wide range of outdoor observation activities.
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