Xiangyang Youbo Photoelectric Co., Ltd
One-Stop Customization, Visual Service, ISO 9001Optics Manufacturer, High-tech leading enterprise
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※ Large eyepiece Wide field of view
Visual viewing comfort, effectively avoid dark Angle, wide field of vision, smaller color difference, stronger effect.
| MODELS | 8x42 | 10x42 | 10x50 | 12x50 |
| Magnification | 8x | 10x | 10x | 12x |
| Objective lens diameter (mm) | 42 | 42 | 50 | 50 |
| Exit pupil diameter (mm) | 5.3 | 7.1 | 5 | 4.2 |
| Relative brightness | 28 | 24 | 25 | 18 |
| Twilight factor | 18.3 | 18.7 | 22.4 | 24.5 |
| Eye relief (mm) | 21 | 24 | 19 | 14 |
| Field of view,real (degree) | 8.1° | 7° | 6.5° | 5.6° |
| Field of view,apparent (degree) | 65° | 49° | 65° | 67° |
| Field of view,real (m / 1000 M ) | 142M | 122M | 114M | 98M |
| Field of view,real ( ft / 1000 yds) | 425FT | 367FT | 342FT | 294FT |
| Close focusing distance (m) | 3 | 5 | 5 | 6 |
| Diopter compensation (dpt) | ±4 | ±3 | ±4 | ±6 |
| weight | 980g | 980g | 960ɡ | 960ɡ |
| size | 220X200X80MM | |||
| Interpupillary distance (mm) | 53 ～74 | |||
| Focus system | Center | |||
| Prism system | Porro | |||
| Prism glass | BAK4 | |||
| Objective lens structure | 2 elements/ 1 groups | |||
| Eyepiece lens structure | 4 elements/ 3 groups | 3 elements/ 2 groups | 4 elements/ 3 groups | |
| Lens and prism coating | Fully multi-coated on all air exposed lenses | |||
| Eyecups style | Twist up with 3 click stops | |||
| Waterproof | Yes | |||
| Adapt to tripod | Yes | |||
