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See recommended productsFOCUS SPORT OPTICS Focus Observer Binoculars - Roof prism, Waterproof, Bak4 glass
367,53 $ VAT included
Focus Observer outdoor binoculars are distinguished by their high twilight performance and advanced optics. This is a classic model for hikers, ornithologists and naturalists.
Focus has equipped the binoculars with top-of-the-line roof optics. The newer generation's chamfered prisms made of BaK-4 glass have a higher refractive index than BaK-7. Combined with the FMC anti-reflective coating, they guarantee a bright, sharp, high-contrast image regardless of the weather.
The twilight factor determines the suitability of the optics in unfavorable light conditions. Focus Observer provides a stable image even after twilight, thus extending observation time. The 8x56 (highest twilight efficiency), 8×42 and 10×42 models are best suited for difficult conditions, and have 30% more brightness than the Focus Observer 34.
The binoculars' aluminum body is lightweight, yet very durable. Additional seals effectively protect it from water, so the Focus Observer will prove its worth when sailing or hiking in the rain. The bridge design provides the best ergonomics for use, even with one hand. On the other hand, adjustable diopter and Twist-up eyecups allow you to adjust the binoculars to your vision defect or use them with glasses.
FOCUS OBSERVER SPECIFICATION | |||||
---|---|---|---|---|---|
8×34 | 10×34 | 8×42 | 10×42 | 8×56 | |
Dimensions (H × W × D) | 45 × 125 × 125 | 45 × 125 × 125 | 53 × 145 × 130 | 53 × 145 × 130 | 66 × 168 × 148 |
Dioptric correction | +/-4 | ||||
Output spot diameter | 4,25 | 3,4 | 5,25 | 4,2 | 7 |
Output pupil length | 17,4 | 16 | 18 | 16 | 20 |
Waterproof | Yes | ||||
Field of view (angle) | 7 | 6 | 7,1 | 6,1 | 6,4 |
Field of view (apparent) | 56 | 60 | 57 | 61 | 51 |
Tripod adapter | Yes | ||||
IP distance (mm) | 55-75 | 55-75 | 57-76 | 57-76 | 59-77 |
Magnification | 8 | 10 | 8 | 10 | 8 |
Prism | Roof | ||||
Viewing distance | 124 | 106 | 124 | 106 | 112 |
Lens (mm) | 34 | 34 | 42 | 42 | 56 |
Closest focusing pubct (m) | 4 | 4 | 2,5 | 2,5 | 3 |
Weight | 420 g | 425 g | 645 g | 620 g | 960 g |
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