Description
- APO Lenses
- Extra-Low Dispersion (ED) Glass
- Dielectric Coatings
- High Resolution Phase Corrected BAK-4 Roof Prisms
- Water Repellent Lens Coatings
- Magnesium Alloy Chassis
- Focus from 2m
- Replaceable Twist-Up Eye Cups with Position Stops
- Stay-On Lens Covers
- Nitrogen Purged / Waterproof / Fog Proof
High performance lens coatings and Dielectric Coated prisms ensure the highest level of light transmission. The Frontier APO Binoculars offer extreme clarity, flat field vision along with excellent chromatic aberration control for a stunning wide angle image. APO models benefit from Extra-low Dispersion glass for controlled chromatic aberration and the elimination of colour fringing.
All Frontier binoculars pass through a strict quality control inspection to ensure all aspects match design intent. They are optically checked for resolution, light transmission and Strehl Ratio for optical image formation. They are further tested in extreme operational temperature conditions from -15°C to +55°C and storage temperatures -40°C to +70°C. Waterproofing to IPX7 and fog proofing are also rigorously tested.
Ideal as bird watching binoculars or for wildlife watching, they are designed to withstand rugged conditions out in the field in all temperatures and weathers. Focusing is smooth, precise and effortless. They're light in weight too, thanks to a magnesium alloy chassis protected with a lightweight, grippy rubber coating.
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Magnification | 10x |
Objective Lens Diameter, mm | 42 |
Field of View (FOV) @ 1000yds, ft | 372 |
Apparent Field of View, deg | 71° |
Field of View, deg | 7.1° |
Eye Relief, mm | 17 |
Exit Pupil, mm | 4.2 |
Optical System | System H7 |
Lens Coating | Wide Band, Anti-reflection, Fully Multi-Coated Lenses with Water Repellent Coating |
Interpupillary Distance, mm | 58-78 |
Close Focus, ft | 6.6 |
Prism Type | Roof |
Prism Glass | BAK 4 |
Eye Cups | Twist-Up (Replaceable) |
Diopter Type | Right Eye |
Tripod Mounting Thread | Yes (1/4" - 20 UNC) |
Color | Green |
Height, in | 5.6" |
Width, in | 4.3-5.1" |
Weight, oz | 26.1 |