กล้องสองตา Nikon Prostaff P3 กล้องสองตาดูนก/กิจกรรมกลางแจ้ง ในราคาเบาๆ แต่คุณภาพคับเลนส์ ชื่อ Nikon เป็นประกัน
| Focusing System |
Central Focus
|
Central Focus
|
Central Focus
|
Central Focus
|
| Magnification |
8x
|
10x
|
8x
|
10x
|
| Objective Diameter |
30mm
|
30mm
|
42mm
|
42mm
|
| Angular Field of View (Real) |
8.7°
|
6.6°
|
7.2°
|
7°
|
| Angular Field of View (Apparent) |
62.6°
|
59.9°
|
53.4°
|
62.9°
|
| FOV at 1000 yds |
456 ft.
|
346 ft.
|
377 ft.
|
367 ft.
|
| Close Focus Distance |
8.2 ft.
|
8.2 ft.
|
9.8 ft.
|
9.8 ft.
|
| Exit Pupil |
3.8mm
|
3.0mm
|
5.3mm
|
4.2mm
|
| Relative Brightness |
14.4
|
9
|
28.1
|
17.6
|
| Eye Relief |
15.4mm
|
15.4mm
|
20.2mm
|
15.7mm
|
| Size (Length x Width):in |
4.9×5.1
|
4.9×5.1
|
5.9×5.1
|
5.9×5.1
|
| Weight |
16.75 oz.
|
16.4 oz.
|
20.3 oz.
|
20.6 oz.
|
| Waterproof/Fogproof |
Yes
|
Yes
|
Yes
|
Yes
|
| Prism |
Roof
|
Roof
|
Roof
|
Roof
|
| Model | 10×30, 10×42, 8×30, 8×42 |
|---|
