Kowa BD III-XD 12x50
Model BD-III-50-12-XD
The Kowa BD III-XD 12×50 is designed for outdoor enthusiasts who need powerful magnification and detailed long-distance viewing. Combining 12x magnification with 50mm objective lenses, this full-size binocular provides a 303 ft field of view at 1,000 yards. Its XD extra-low dispersion glass helps reduce chromatic aberration and supports clear, high-contrast images. The roof-prism design, waterproof construction, and nitrogen-filled housing make it suitable for birdwatching, wildlife observation, hunting, and exploring distant landscapes in changing outdoor conditions.
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Key Features
The Kowa BD III-XD 12×50 combines 12× magnification, 50mm objective lenses, and XD extra-low dispersion glass for detailed long-distance observation. Its 303 ft field of view at 1,000 yards provides a practical viewing area, while the 5mm exit pupil supports observation in changing light conditions. The waterproof, nitrogen-filled construction helps protect the optics against moisture and internal fogging, making this full-size binocular suitable for birdwatching, wildlife observation, and outdoor exploration.
12x
Magnification
50 mm
Objective Lens
XD ED
Extra-Low Dispersion Glass
Waterproof
Nitrogen-Filled Construction
5 mm
Exit Pupil
303 ft
Field of View at 1,000 yd
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Quick Specifications
| Specification | Details |
|---|---|
| Magnification | 12x |
| Objective Lens Diameter | 50 mm |
| Prism Type | Roof Prism |
| Optical Glass | Kowa XD Extra-Low Dispersion |
| Field of View | 303 ft at 1,000 yd |
| Exit Pupil | 4.2 mm |
| Eye Relief | 17.5 mm |
| Waterproof | Yes |
| Weight | 25.75 oz (730 g) |
About This Model
The Kowa BD III-XD 12×50 is a full-size roof-prism binocular designed for detailed long-distance observation. It combines 12x magnification with 50mm objective lenses and Kowa XD extra-low dispersion optical elements. This optical configuration helps reduce chromatic aberration and supports clear, high-contrast images with natural color reproduction. The model is designed for birdwatching, wildlife observation, and viewing distant subjects across open landscapes.
With a 5.8° real field of view, equivalent to approximately 303 feet at 1,000 yards, the Kowa BD III-XD 12×50 provides a useful viewing area for tracking distant subjects. Its 4.2mm exit pupil and 17.5mm eye relief contribute to the viewing experience, while the minimum focusing distance of approximately 9.8 feet provides flexibility when observing subjects at shorter distances. The adjustable interpupillary distance ranges from 57 to 76mm.
The binoculars feature a lightweight magnesium alloy body with protective rubber armoring for durability and a secure grip. Their waterproof, nitrogen-filled construction helps protect the internal optical components against moisture and internal fogging during outdoor use. Weighing approximately 25.75 ounces, the Kowa BD III-XD 12×50 is suited to users who prioritize higher magnification and detailed observation for birdwatching, wildlife viewing, and outdoor exploration.
Full Specifications
The Kowa BD III-XD 12×50 features 12x magnification, 50mm objective lenses, and XD extra-low dispersion glass for detailed long-distance viewing. This full-size roof-prism binocular offers a 5.8° field of view, 4.2mm exit pupil, and 17.5mm eye relief. Its magnesium alloy body, waterproof construction, nitrogen-filled housing, and Kowa KR lens coating are designed to support reliable outdoor use for birdwatching, wildlife observation, and extended viewing across open landscapes.
| Specification | Details |
|---|---|
| Model | Kowa BD III-XD 12×50 |
| Magnification | 12x |
| Objective Lens Diameter | 50mm |
| Prism Type | Roof Prism |
| Optical Glass | Kowa XD Extra-Low Dispersion Glass |
| Real Field of View | 5.8° |
| Field of View at 1,000 Yards | 303 ft |
| Field of View at 1,000 Meters | 101 m |
| Apparent Field of View | 69.6° |
| Exit Pupil Diameter | 4.2mm |
| Relative Brightness | 17.6 |
| Eye Relief | 17.5mm |
| Minimum Focusing Distance | 9.8 ft (3.0m) |
| Interpupillary Distance | 57–76mm |
| Focus System | Center Focus |
| Diopter Adjustment | Yes |
| Lens Coating | Kowa KR Oil-Resistant Coating |
| Body Material | Magnesium Alloy |
| Rubber Armoring | Yes |
| Waterproof | Yes |
| Fogproof | Yes – Nitrogen-Filled |
| Tripod Adaptable | Yes – 1/4"-20 Threaded Adapter Socket |
| Dimensions (L × W × H) | 6.9 × 5.2 × 2.2 in (160 × 134 × 57mm) |
| Weight | 25.75 oz (730g) |
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Where to Buy
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