Maven B5 15x56

• 15x magnification with 56 mm objectives: this configuration is built for picking apart distant terrain, letting the user resolve antlers, horn tips, or subtle movement far beyond the reach of general-purpose binoculars while still keeping enough objective size for useful low-light work.
• Abbe/Koenig roof prisms: this prism design supports high light transmission and strong contrast, which helps preserve detail at dawn, dusk, and over long glassing sessions where small differences in image brightness matter.
• Fluorite-based B.5 optical system: within the B.5 family, fluorite glass is used to improve color fidelity and reduce visible fringing, making fine detail easier to separate against complex backgrounds such as rock, brush, and timber.
• Magnesium housing: the magnesium frame keeps a large 15x56 binocular more manageable in the field while adding the rigidity needed to maintain optical alignment during travel, hard use, and changing temperatures.
• Tripod-adaptable, waterproof and fogproof build: the B5 15x56 is suited to long stationary observation from a ridge, blind, or range, and its sealed, nitrogen-filled construction keeps internal fogging from interrupting use in wet or rapidly changing weather.

About the Maven B5 Series

The Maven B5 series sits in Maven’s elite-level B Series and is built for users who need more reach than a conventional all-round binocular can provide. Rather than focusing on compactness, the B5 family is designed around extended-range viewing, strong low-light performance, and the ability to recognize fine detail across open country. That makes it especially relevant for mountain hunting, long observation periods, and any application where a tripod-supported binocular can replace repeated spotting-scope checks.

Across the line, Maven offers the B5 in 10x56, 12x56, 15x56, and 18x56 formats, with a specialized 18x56 version also available with an integrated reticle for target and competitive shooting. The series combines fluorite glass, Abbe-Koenig prisms, and a magnesium frame, a layout chosen to balance image quality, light transmission, and structural strength. Waterproof and fog-proof construction supports field use in difficult weather, while tripod adaptability reflects the series’ intended role: steady, high-detail observation over long distances where image stability is just as important as magnification.

About the Maven B5 15x56

The Maven B5 15x56 is the configuration in the line that balances serious reach with a field of view and handling that remain practical for scanning broad terrain. With 15x magnification, it gives a clear advantage when judging distant animals or checking terrain features that would look too small through a 10x or 12x binocular. The 56.00 mm objective lenses help sustain image brightness as light fades, so the binocular remains useful during the first and last parts of legal shooting light when detail recognition becomes more difficult.

The optical system pairs roof-type Abbe/Koenig prisms with fully multicoated lenses and high stated light transmission, supporting a bright, contrast-rich image that helps separate subtle shapes from shadowed backgrounds. A 3.73 mm exit pupil and 17.80 mm eye relief make the binocular easier to use over long sessions, including for many eyeglass wearers, while the 4.50 ° field of view is wide enough to track and relocate distant subjects without feeling overly restrictive for a 15x optic.

Mechanically, the binocular uses a magnesium body with central focusing, right-eye diopter adjustment, and a single-hinge layout. At 1275.00 g, it is substantial enough to benefit from tripod mounting, and the tripod-adaptable design is a real advantage at this magnification because it lets the user extract the full resolving power of the glass. Waterproof, fogproof, and nitrogen filled construction adds reliability in cold mornings, wet weather, and rapid temperature changes.

About Maven

Maven Outdoor Equipment Company was founded in 2013 in Lander, Wyoming. The company focuses on binoculars, spotting scopes, riflescopes, rangefinders, and monoculars, with product families that include the B, C, S, CS, RS, CRS, RF, and CRF series. Maven’s B and S Series optics use Japanese components and are assembled in a military-standard facility in San Diego, while the company inspects and tests B and S Series models for quality assurance at its Lander headquarters.

Within Maven’s lineup, the B Series binoculars are known for using Japanese-produced glass and magnesium frames, while the C Series takes a lighter, more cost-conscious approach with polymer frames. Maven also stands out for its direct-to-consumer sales model, which has become a defining part of the brand alongside its emphasis on practical field optics for hunting, observation, and shooting applications.

Main Features

• Magnification: 15.00 x
• Objective lens diameter: 56.00 mm
• Prism type: Roof - Abbe/Koenig
• Field of view: 78.75 m/1000m
• Field of view (angular): 4.50 °
• Apparent field of view: 67.50 °
• Exit pupil: 3.73 mm
• Eye relief: 17.80 mm
• Close focus: 2.90 m
• Diopter range: -2.0 / +2.0 dpt
• Focusing system: Central
• Diopter setting position: Right eye-piece
• Lens coating: Fully Multicoated
• Light transmission: 92.90 %
• Housing material: Magnesium
• Filled with: Nitrogen
• Waterproof: Yes
• Fogproof: Yes
• Tripod adaptable: Yes
• Interpupillary distance: 56.00 mm - 75.00 mm
• Dimensions: 208.00 mm x 155.00 mm x 50.00 mm
• Weight: 1275.00 g
• Working temperature range: - 25°C / +60°C
• Country of manufacture: Japan

Warranty

10 years. The Maven B5 15x56 is listed here with a 10-year warranty.