技术细节
| 最大放大倍率 |
60 x |
| 良视距/眼视目镜距离范围 |
18 - 20 mm |
| 角视场(最小放大倍率) |
2.1 ° |
| 角视场(最大放大倍率) |
1 ° |
| 物镜直径 |
80 mm |
| 放大率 |
20 x |
| 最近聚焦距离 |
4 m |
| 视野 |
11.9 - 33.8 m |
| 最小放大倍率 |
60 x |
聚焦系统
| 镜头镀膜 |
Fully Multi Coated (FMC) |
FIELDMASTER-ED80DS, 20-60x80, waterproof, 2.1 to 1 degrees
The new Fieldmaster-ED80DS is perfect for serious birdwatching and nature observations. This high-end instrument features a triplet objective lens providing a highly corrected image and overall excellent optical performance. Exotic ED (Extra-low dispersion) glass is employed in its construction which virtually eliminates chromatic aberation and delivers high-fidelity true-colour images. Optics are fully multi-coated throughout. Features a precision 10:1 ratio dual-speed focuser for exceptional focusing accuracy. Fully waterproof and nitrogen-filled for clear, fog-free viewing. The supplied zoom eyepiece provides a generous 20-18mm of eye relief. Features a lightweight polycarbonate body with sliding dewshield/sun shade. Supplied with Stay-on case and tabletop tripod but can be used on a full-size tripod via its standard tripod bush.