Fujinon 25x150 MT-SX

• 150 mm objective lenses: The large objectives gather far more light than conventional binoculars, which helps maintain a bright, usable image for astronomy, coastal observation, and other low-light viewing.
• 25x magnification: This power gives the reach needed to study distant subjects in detail while remaining practical for wide-area scanning compared with higher-magnification fixed large binoculars.
• EBC multi-coating: Fujinon's coating system improves light transmission and suppresses reflections, which supports better contrast and a cleaner image when viewing stars, shorelines, or distant structures.
• 6.00 mm exit pupil: A generous exit pupil helps the binocular stay comfortable during extended observation and supports a bright view in dusk and night conditions.
• Waterproof, nitrogen-filled construction: The sealed housing resists moisture ingress and internal fogging, making the binocular more dependable in marine air, cold nights, and changing weather.

About the Fujinon MT Series

Fujinon MT is positioned as Fujifilm’s standard-model binocular line, built around practical durability and dependable optical performance rather than compact size. Across the series, the emphasis is on robust construction, straightforward handling, and the kind of image quality needed for serious observation in marine and outdoor settings. A defining feature of the line is EBC multi-coating on lenses and prisms, which is used to improve transmission and preserve contrast in difficult light.

The series is also known for bodies designed to be waterproof and suitable for operation from −20°C to +50°C, reflecting a design philosophy focused on field use rather than casual carry. Within the broader MT family there are embossed-body and rubber-body variants, and some models add specialized functions such as a built-in compass. While the core MT range covers classic marine-style binoculars, the 25x150 MT-SX sits in Fujifilm’s separate LB150 Large Binocular Series, extending the same practical optical approach into a much larger format intended for long-distance and low-light observation.

About the Fujinon 25x150 MT-SX

The Fujinon 25x150 MT-SX is a large-format binocular built for situations where image brightness and long-range detail matter more than portability. Its 25.00 x magnification gives enough reach for astronomy, coastal surveillance, and fixed-position terrestrial observation, while the 150.00 mm objective lenses provide the light-gathering ability needed to keep the image bright at dusk and at night. That combination makes this model especially well suited to extended viewing of distant subjects where smaller binoculars begin to lose clarity and brightness.

Optically, the binocular pairs a 6.00 mm exit pupil with 18.40 mm eye relief, which helps make long sessions more comfortable and keeps the image accessible for users who need a less critical eye position. The 47.20 m/1000m field of view is wide enough to scan broad areas without making the 25x magnification feel overly restrictive. Fully multicoated optics support contrast and image definition, which is particularly important when observing faint targets or working in hazy, low-contrast conditions.

Mechanically, this is a purpose-built large binocular rather than a handheld design. Its substantial housing, central focusing system, waterproof construction, and nitrogen filling are aimed at stable mounted use in demanding environments. For marine observation, harbor monitoring, or astronomical viewing from a fixed platform, the MT-SX combines high magnification with the brightness and durability expected from serious large-aperture binoculars.

About Fujinon

Fujinon is part of a long Japanese optical tradition within Fuji Photo Film Co., Ltd., established on January 20, 1934, with production beginning at the Ashigara Factory in Kanagawa Prefecture the following month. Fuji Photo Optical Co., Ltd. was established in 1944, and FUJINON binocular production began in 1947 with the 6×25 Meibo series. This background matters because the brand’s binoculars come from a company with decades of experience in both optical glass and precision imaging.

Today, Fujifilm’s optical-device business spans binoculars and lenses for broadcast, cinema, videography, CCTV, and industrial applications. Within binoculars, FUJINON is known for lines such as the MT and FMT series, and for applying technologies like EBC multicoating to improve transmission and contrast. That broader optical expertise helps explain why Fujinon binoculars are widely associated with marine observation, astronomy, and other demanding applications where reliability and consistent image quality matter.

Main Features

• Series: Fujinon MT
• Magnification: 25.00 x
• Objective lens diameter: 150.00 mm
• Field of view at 1000 m: 47.20 m/1000m
• Field of view: 2.70 °
• Exit pupil: 6.00 mm
• Eye relief: 18.40 mm
• Prism type: Roof - Schmidt/Pechan
• Lens coating: Fully Multicoated
• Focusing system: Central
• Length: 942.00 mm
• Width: 365.00 mm
• Height: 193.00 mm
• Weight: 18143.00 g
• Nitrogen filled: Yes
• Waterproof: Yes
• Fogproof: Yes
• Body type: Single hinge
• Made in: Japan

Warranty

2 years. The Fujinon 25x150 MT-SX is covered by a 2-year warranty.

In the Box

• Fujinon 25x150 MT-SX binocular
• Objective lens caps
• Rubber eyecups
• Instruction manual