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| PENTAX Corporation is pleased to announce the addition of two new models to its UCF R series of compact, porro-prism binoculars that offer outstanding portability and excellent viewing in a wide range of situations both indoors and outdoors. |
Major Features
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- Compact body
The compact body, featuring large 21-mm objective lenses, is designed for superb portability, making the binoculars easy to carry around and use in all kinds of viewing situations, from observing nature outdoors to watching theatre indoors.
- Bright, clear field of view
The binoculars offer a brighter field of view thanks to multi-coated lenses and high-refraction BaK4 glass prisms, which increase the amount of transmitted and reflected light. Also, aspherical lens elements provide clear images with virtually no distortion even at the edges of the field of view.
- Rubber coating
An external rubber coating gives the binoculars extra impact resistance and adds greater grip.
- Eyepieces adjust easily for the distance between your eyes
These binoculars feature PENTAX's original synchronized eyepiece adjuster that, with a simple operation, smoothly adjusts the distance between the eyepieces to match the user's eyes.
- Other features
- Sliding eyecups that switch between use and storage with a single touch
- Convenient diopter adjustment with a center detent ( at the 0 m-1 diopter position )
- Minimum focus distance of 2.8 meters for observation of nearby subjects
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| Specifications |
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Models |
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8x21 UCF R |
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10x21 UCF R |
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Type |
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Porro prism, center focusing |
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Lens construction |
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( Objective ) |
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2 elements in 1 group |
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2 elements in 1 group |
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( Eyepiece ) |
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3 elements in 2 groups |
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3 elements in 2 groups |
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Magnification |
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8 X |
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10 X |
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Objective lens
diameter |
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21 mm |
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21 mm |
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Real field of view |
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6.2º |
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5.0º |
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Apparent field
of view |
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50º |
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50º |
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Field of view
at 1000 m |
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108 m |
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87 m |
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Exit pupil |
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2.6 mm |
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2.1 mm |
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Eye relief |
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13 mm |
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9.5 mm |
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Relative brightness |
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6.7 |
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4.4 |
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Diopter
adjustment range |
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± 4 m-1 |
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Eye width
adjustment range |
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58 to 72 mm / 2.3 to 2.8 inches |
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Focusing range |
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2.8 m to infinity / 9.2 ft to infinity |
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Eyepiece ring |
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Sliding type |
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Body color |
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Black |
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Height & Width |
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83 x 110 mm / 3.3 x 4.3 inches |
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80 x 110 mm / 3.1 x 4.3 inches |
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Thickness |
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48 mm / 1.9 inches |
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Weight |
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210 g / 7.4 oz |
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Accessories |
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Objective lens caps, Case, Neck strap |
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