Fujinon XF 400mm f/4.5 R LM OIS WR · Fujifilm

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Fujifilm X Super Telephoto aps-c 2026

Image Stabilization

Weather Sealed

Autofocus

Aperture Ring

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400mm

Focal length

f/4.5

Max aperture

1245 g

Weight

14mm35mm85mm200mm600mm

▲ 400mm

Max aperture

f/2.8

f/4.5

f/11

Constant Aperture

Zoom Ratio: 1x

Aperturef/4.5

f/4.5f/22

Near focus64' 11"

Far focus66' 4"

Total DOF1' 4"

Hyperfocal6186' 6"

Subject distance65' 7"

Focal length400 mm

Aperturef/4.5

SensorAPS-C

Illustrative scene preview based on this lens's focal length, aperture, and sensor coverage.

This preview uses 400mm, f/4.5, and APS-C. Subject distance is estimated to keep lens previews comparable.

Min aperture: f/22
Diaphragm blades: 9

Optics

Optical construction: 21 elements in 14 groups
Special elements: 4 ED elements, 2 Super ED elements

Focusing

Minimum focus: 2.75 m
Max magnification: 0.16×
AF motor: Linear Motor

Physical

Weight: 1245 g
Dimensions: ⌀105mm × 240mm
Filter thread: 95 mm
Hood included: Yes
Color: Black

Handling & Controls

Tripod Collar: Yes
Focus Limiter: Yes
Custom Buttons: 4

Recommended Use

Ideal for: Sports, Wildlife

Release year: 2026
Announced: Sep 4, 2026
Approx price: $3199 USD
Optical correction & RAW development: NDPix Photo Editor

The best

400mm f/4.5 reach for distant Fujifilm X subjects

Also

OIS, LM, WR and tripod collar for field work

Summary

The Fujinon XF 400mm f/4.5 R LM OIS WR from Fujifilm is a dedicated super-telephoto prime for the Fujifilm X system, combining a 400mm focal length, a maximum aperture of f/4.5, optical stabilization, linear-motor autofocus and weather-resistant construction. On APS-C X-series bodies it delivers a field of view comparable to a 600mm lens on full frame, making it a focused tool for distant subjects, clean separation and decisive framing. Its 21 elements in 14 groups, rounded 9-blade diaphragm and f/22 minimum aperture give the lens a complete technical profile for long-distance photography.

Its photographic appeal lies in pairing substantial reach with a brighter aperture than many compact telephoto zooms can offer. OIS helps keep the view steady, while the LM designation points to autofocus behavior intended for responsive tracking. The WR construction, fixed rotating tripod collar, 95mm front filter thread and 1245g weight all reinforce its role as a field lens: serious, specialized and made for photographers who spend long sessions outdoors following unpredictable subjects. It is not a casual walkaround lens, but that focus is part of its value.

This lens is most naturally aimed at wildlife, birds, field sports, aviation, distant action and compressed landscape details. In the Fujifilm X system, it should interest photographers who want the cleaner handling and subject isolation of a long prime instead of a slower zoom. The 2751mm minimum focus distance and 0.16x maximum magnification do not make it a macro lens, but they allow tighter framing of medium or large subjects from a comfortable distance. It is a specialized optic, best chosen when reach, stabilization and outdoor reliability matter more than broad everyday versatility.