Nitrogen Filled Waterproof ED Binocular Telescope 8x42 For Outdoor
Exploration
Parameter:
| Magnification | 8x | 10x |
| Objective lens diameter | 42mm | 42mm |
| Prism System | ROOF/BaK4 | ROOF/BaK4 |
| Lens coating | Fully multi-coated | Fully multi-coated |
| Focus System | Center focus | Center focus |
| Field of view: 1000m/1000yds. | 128m/384ft | 114m/342ft |
| Field Angle | 7.3 | 6.5 |
| Exit Pupil | 5.25mm | 4.20mm |
| Exit Relief | 18mm | 15mm |
| Close Focusing Distance | 2.5m | 2.5m |
| Waterproof | Yes | Yes |
| Color | Oilve Green | Oilve Green |
| Material | Optical Glass | Optical Glass |
| Eyecups | Rotating stretch | Rotating stretch |
| Relative brightness | 27.56 | 17.64 |
Features:
* FMC+Prism Dielectric Film+Phase Corrected Prism Coating.
* Extra-low dispersion (ED) glass produces outstanding color
fidelity and high-quality image.
* Non-slip Rubber Housing with strong shock proof.
* Long eye relief (15mm) and twist-up eye-cups, great for eyeglass
wearers.
* IPX7 Waterproof and Fogproof, 100% Nitrogen gas filled.
* Perfect Body Design- and available for tripod and mobile phone
Product Description
1. Apochromatic ED glass objective lens with abbe number 90.3,
objects film clear at long range.
2. 20.2mm big size Bak4 roof prism ensure bright HD film.
3. All lenses are fully multi-coated green, restore real color in
any distance.
4. 11 pieces optical glass optical system reduce film distortion in
wide angle view. Ocular lens 5E3G; Objective lens 4E3G.
5. Optical glass ocular lens reduce light scattering further.
6. 2.5m near focus ensure view clearness at close distance objects.
