Barska 10x21 Blueline Binocular
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Overview
BK-7 Reverse Porro Prism Design, Multi Coated Ruby Lenses
Description
The 10x21 Blueline Binocular from Barska features a reverse Porro prism design for a lighter more compact optic with multi-coated ruby lenses to minimise UV glare. The reverse Porro prisms place the objectives closer together and the oculars farther apart rather than the opposite. A wide angle of 6° compliments the wide Apparent Angle of View of 59.8°. BAK7 glass rounds off the pleasing closed-bridge design.
Features
- Ergonomic closed bridge design
- Wide AVoV of 59.8° and a 314 foot FOV
- Dioptric adjustment ring on the right ocular for individual eye viewing comfort
- Lightweight 6.1 ounces and compact 4.6 inches produce a practical take-along-anywhere optic
- Reverse Porro prism design places the objective lenses closer together than the oculars for a more compact, lighter binocular
- Multicoated optics on at least one lens surface reduces light loss and glare due to reflection offering a brighter, higher-contrast image
Specifications
Prism Type | Porro |
Magnification | 10x |
Objective Lens Diameter | 21mm |
Angle of View | 6.0° (actual) |
Field-of-View | 314' @ 1000 yd / 104.25 m @ 1000 m |
Minimum Focus Distance | 33' / 10.06 m |
Exit Pupil Diameter | 2.1 mm |
Eye Relief | 7.8 mm |
Interpupillary Adjustment | Not Specified By Manufacturer |
Dioptric Correction | Not Specified By Manufacturer |
Focus Type | Centre |
Tripod Mount | None |
Dimensions | 4.6 x 3.9 x 2.5" / 11.68 x 9.91 x 6.35 cm |
Weight | 6.1 oz / 173 g |
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Details
- Product: Barska 10x21 Blueline Binocular
- Manufacturer: Barska
- Model: AB10290
- SKU: AB10290
- RM Product #: 37526