PENTAX quality and clarity are within reach, at a price that’s within reach, too. These compact porro-prism models feature a dual-axis, single body design with synchronized eyepiece adjustment. Aspherical lens elements give you edge-to-edge sharpness. Clear images and clearly affordable.
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| Type | Porro-prism centre focusing (Linked-dual-axis) |
| Model No. | 61931 – UP 8×25 WP |
| Model No. | 61932 – UP 10×25 WP |
| Eye Relief | 15 mm |
| Magnification | 8x |
| Objective Lens Diameter | 25 mm |
| Real Field of View | 6.2 º |
| Field of view at 1000m | 108 m |
| Field of view at 1000m | 324 ft. |
| Exit Pupil | 3.1 mm |
| Relative Brightness | 9.6 |
| Diopter Adjustment | Center Pop-up |
| Diopter Adjustment Range | ±3m-1 |
| Eye Width Adjustment Range | 57 to 78 mm / 2.2 to 3.1 inches |
| Focusing Range | 1.9 m to infinity / 6.2 ft. to Infinity |
| Eyepiece Ring | Helicoid eyepiece ring (3 click stop) |
| Height & Width | 110 x 116 mm / 4.3 inches x 4.6 inches |
| Thickness | 69 mm / 2.7 inches |
| Notes | Waterproof 1m depth of water (JIS class 6) |
| Body Color | Black |
| Apparent Field of View | 47º |
| Weight | 350g / 12.3 oz. |
| Lens Construction (Objective lens / Eyepiece lens) | 2 elements – 2 group / 5 elements – 5 groups |
