Fujinon 10x70 FMT-SX Polaris

• 70 mm objectives with 7 mm exit pupil: This combination delivers a bright, relaxed view in low light and under dark skies, making the binocular well suited to marine observation and astronomy.
• Field-flattener optical design: Fujinon's Polaris system keeps the image sharp across the field of view, so details near the edge stay more usable during scanning.
• 23 mm eye relief: The long-eye-relief eyepiece design gives eyeglass wearers a more comfortable full-field view and reduces strain during extended sessions.
• Individual-focus eyepieces: Separate focusing on each eyepiece suits long-distance observation, where once set, the binocular stays stable and avoids accidental focus shifts.
• Metal, nitrogen-filled waterproof body: The robust housing, fogproof construction, and tripod adaptability make the binocular practical for shipboard use, exposed weather, and long stationary viewing.

About the Fujinon FMT Series

The Fujinon FMT series is Fujifilm's flagship professional binocular line, built for users who need dependable optical performance in demanding environments rather than compact carry convenience. The series includes 7x50, 10x50, 10x70, and 16x70 models, covering marine observation, astronomy, and other long-range viewing tasks where image stability, brightness, and edge sharpness matter more than low weight.

A defining feature of the range is the use of field-flattener lenses, which help maintain a sharp image across the viewing field instead of concentrating sharpness only in the center. Fujifilm also equips the series with EBC multicoating on all lenses and prisms to improve light transmission and contrast. Long-eye-relief eyepieces, with up to 23 mm eye relief, make the FMT family especially practical for eyeglass wearers and for prolonged observation. The airtight waterproof construction is designed for operation from −20°C to +50°C, which fits the series' role as a hard-use optical tool for shipboard work and outdoor observation.

About the Fujinon 10x70 FMT-SX Polaris

The Fujinon 10x70 FMT-SX Polaris is a large-aperture marine and astronomy binocular that combines 10x magnification with 70 mm objective lenses to deliver a bright, steady image for long-range viewing in low light. This specification gives it a generous 7 mm exit pupil, which helps the image stay bright at dusk, on open water, and under night skies. Compared with higher-magnification giant binoculars, the 10x format is easier to hold on target and more forgiving when scanning broad areas.

The optical layout is designed for practical observation rather than close-focus versatility. Its individual-focus eyepieces are well suited to distant subjects, where focus can be set once and left in place during extended use. The 23 mm eye relief is especially useful for eyeglass wearers, while the 5.3° field of view gives a broad enough image for tracking vessels, coastlines, or star fields without feeling cramped. Fujinon's field-flattener system helps preserve usable sharpness toward the edge, which is valuable when scanning rather than looking only at the center of the image.

Mechanically, this model is built as a serious observation instrument. The metal body, nitrogen-filled construction, and waterproof, fogproof sealing support use in wet and changeable conditions. At over two kilograms, it is substantial, but that mass also reflects the large optics and robust housing. Because it is tripod adaptable, the binocular can be mounted for more comfortable extended viewing, which is often the best way to take full advantage of its 70 mm objectives.

About Fujinon

Fujinon is the optics brand of Fujifilm, a Japanese company established as Fuji Photo Film Co., Ltd. on January 20, 1934, with production beginning at the Ashigara Factory in Kanagawa Prefecture the following month. FUJINON lens development grew from Fujifilm's optical-glass production at its Odawara Factory in 1940, and Fuji Photo Optical Co., Ltd. was established in 1944. Binocular production began in 1947 with the 6×25 Meibo series.

Today, Fujinon's optical-device business spans binoculars, broadcast and cinema lenses, videography, CCTV, and industrial optics. That broader optical background is relevant here because Fujinon binoculars are known for practical engineering, durable construction, and strong optical consistency. Within the binocular range, the brand's MT, FMT, Mariner, Polaris, and TECHNO-STABI lines cover professional marine use, astronomy, and stabilized observation, while the Polaris series is distinguished by its field-flattener lens design for improved sharpness across the image.

Main Features

• Magnification: 10.00 x
• Objective lens diameter: 70.00 mm
• Prism type: Roof - Abbe/Koenig
• Field of view at 1000 m: 92.70 m/1000m
• Field of view: 5.30 °
• Exit pupil: 7.00 mm
• Eye relief: 23.00 mm
• Lens coating: Fully Multicoated
• Focusing system: Separated for each eye
• Diopter setting position: On both eye-pieces
• Interpupillary distance: 56.00 mm - 74.00 mm
• Length: 282.00 mm
• Width: 254.00 mm
• Height: 99.00 mm
• Weight: 2160.00 g
• Housing material: Metal
• Nitrogen filled: Yes
• Waterproof: Yes
• Fogproof: Yes
• Tripod adaptable: Yes
• Body type: Single hinge
• Made in: Japan

Warranty

2 years. The Fujinon 10x70 FMT-SX Polaris is covered by a 2-year warranty.

In the Box

• Objective lens covers
• Eyepiece rainguard
• Soft case
• Neck strap
• Round-shaped eye cups