Lijing International Optical Equipment Factory
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ED Glass 10 x 42 Roof Prism Binoculars for Adults BAK4 optics Binoculars
Parameter:
| BODY STYLE | SEMI-AROMATIC THERMOPLASTIC BODY |
| POWER | 8 X ± 5% |
| OBJECTIVE DIAMETER | Φ 42mm ± 1 mm |
| FEILD ANGLE | 6.8 ° ± 5% |
| FIELD OF VIEW(at 1000m/at 1000yds.) | 118m / 354ft. |
| EXIT PUPIL DIA. | Φ5.25mm ±10% |
| NEAR FOCUS | 2.5m |
| EYE-RELIEF | 17.2mm |
| RELATIVE BRIGHTNESS | 18.3 |
| OBJECTIVE LENS: | 4E3G |
| OCULAR LENS: | 3E2G |
| LENS TYPE: | SPHERICAL LENS |
| PRISM: | ROOF |
| OPTICAL MATERIAL | ALL SPHERICAL LENS AND PRISM ARE MADE OF OPTICAL GLASS |
| PRISM MATERIAL: | BaK4 |
| COATING CONDITION | ALL LENS - FULLY COATED |
| SURFACE TREATMENT | PAINT / RUBBER |
| RESOLVING POWER | 5.7 ” |
| FOCUSING SYSTEM | CENTER FOCUS |
| FOCUSING ADJUSTMENT | -4 TO +8 DIOPTER |
| OCULAR ADJUSTMENT | -4 TO +4 DIOPTER |
| ADJUSTABLE EYE PUPIL | 56--74mm |
Features:
* Extra-Low Dispersion (ED) objective lenses provide high resolution, high contrast images that are virtually free of optical defects like chromatic aberration (color fringing).
* Fully multi-coated optics deliver maximum light transmission through the optical path.
* Phase coated BaK-4 prisms produce vivid, true-to-life colors.
Binoculars ED Glass
This powerful binocular features a well-balanced lightweight polymer frame, extra low-dispersion (ED) glass, and fully multi-coated lenses for an exceptionally clear, bright, high-contrast image with excellent color reproduction.
LARGER EYEPIECE
Experience Razor Sharp Images of Wildlife, Even From Distance.
42mm BAK-4 prisms and 21mm eyepiece represents the higher refractive index rate, brighter edges of the field of view , as well as circular shape of the exit pupil, which means more light will be transmitted to the entire field of view.
FULLY WATERPROOF/FOGPROOF FOR OUTDOOR USE
The body is Nitrogen-purged and O-ring sealed, making it a weatherproof unit under nearly any conditions.
ED binocular’s optical performance rivals that of more expensive binoculars, at a to fit your budget. This versatile, all-around binocular is a great choice for the trail, the stadium, the arena, or just about anywhere you want a close-up view of the action without sacrificing brightness or detail.
It’s an especially great companion for nature observation and bird watching, with ED glass that helps you spot the subtlest field markings and a close focus of just 3.0m.
