18x50 IS All Weather
High-magnification professional performance
For both professionals and hobbyists, the 18x50 IS
sets a new high in viewing performance. With wide 67° field-of-view for
easy subject location and long eye relief of 15mm, it’s larger than
life.
- 18x magnification
- Large 50mm objective lens
- Water-resistant
Specifications for 18x50 IS All Weather
| Prism | Porro II Prism |
| Focusing Systems | Center-Focusing |
| Magnification | 18x |
| Obj. Lens Diameter (mm) | 50 |
| Focus Range (feet) | 19.7 – infinity |
| Exit Pupil (mm) | 2.8 |
| Relative Brightness | 7.8 |
| Eye-Relief (mm) | 15 (Long-Eye Relief) |
| Real Field-of- View (°) | 3.7 |
| Apparent Angle-of-View (°) | 66.6 (wide) |
| Field-of-View At 1,000 yds (ft.) | 194 |
| Size (Encased) (W x D x H)(in.) | 6 x 7 - 9 / 16 x 3 - 3 / 16 |
| Weight*1 (oz.) | 41.7 |
| Water Resistant | Water Resistant (usable in heavy rain) |
| Exterior Finish | Rubber Coat |
| Power Source | 2 AA alkaline batteries |
| Battery Life*2 | 2.5hrs. |