FUJINON XF400mmF4.5 R LM OIS WR Lens

• Get closer without getting closer – The 609mm-equivalent reach lets you fill the frame with distant birds, wildlife, athletes, and action while maintaining the distance you need.
• Carry serious reach with less fatigue – At just 1,245g (2.74 lb) and 239.5mm (9.4 in.) long, it delivers super-telephoto capability in a more manageable package for long shoots, hikes, and sideline work.
• Capture moments before they disappear – The high-speed linear autofocus motor provides fast, quiet, and accurate focusing for subjects that move or change direction without warning.
• Shoot handheld with greater confidence – Up to 5.5 stops of Optical Image Stabilization helps minimize camera shake, giving you more freedom to work without depending on a tripod or monopod.
• Preserve the details that make the shot – Four ED and two Super ED elements help maintain sharpness, accurate color, contrast, and fine detail in feathers, fur, uniforms, and other distant subjects.
• Get cleaner results in challenging light – Super EBC coating helps control ghosting and flare, supporting clearer, higher-contrast images during demanding outdoor shoots.
• Separate your subject from distracting backgrounds – The 400mm focal length and F4.5 maximum aperture help create strong subject isolation and beautifully compressed backgrounds.
• React faster to predictable action – Focus preset functionality lets you prepare for specific focusing distances, helping reduce reaction time when you know where the next key moment may happen.
• Keep shooting when conditions change – Weather-resistant construction makes the lens better suited to the wet, dusty, cold, and unpredictable environments common in wildlife and outdoor sports photography.
• Extend your reach when 400mm isn't enough – Compatibility with the XF1.4X TC WR and XF2X TC WR teleconverters gives you greater flexibility for exceptionally distant or inaccessible subjects.
• Spend more time shooting and less time managing heavy equipment – Its combination of extreme reach, stabilization, fast AF, and relatively lightweight construction is designed for photographers who need to stay mobile and responsive throughout the day.
• Invest in a purpose-built long-range photography tool – From birds in flight and elusive wildlife to fast outdoor sports, the XF400mmF4.5 combines the reach, speed, stability, optical quality, and durability serious super-telephoto photographers need in one lens.

Features:

609mm-Equivalent Super-Telephoto Reach

The FUJINON XF400mmF4.5 R LM OIS WR Lens delivers a 400mm focal length on FUJIFILM X Series cameras, providing a 609mm equivalent focal length and a narrow 4.1° angle of view. This gives wildlife, bird, and outdoor sports photographers the ability to fill the frame with subjects that are too distant, difficult, or unsafe to approach. The long reach also lets photographers maintain their position without disturbing wildlife or interfering with the action, while producing the strong perspective compression and subject isolation associated with dedicated super-telephoto photography.

Compact, Lightweight Design for Greater Mobility

Super-telephoto reach often comes with substantial size and weight, but the XF400mmF4.5 is designed to remain practical in the field. It weighs just 1,245g (2.74 lb) and measures approximately 239.5mm (9.4 inches) long, making it easier to carry during long wildlife excursions, sporting events, and location shoots. Its relatively lightweight construction reduces the burden of working with a long lens for extended periods and makes handheld shooting, repositioning, and following unpredictable subjects more manageable.

Bright F4.5 Maximum Aperture

The lens combines its 400mm focal length with a maximum aperture of F4.5, giving photographers greater control over subject separation and available light than slower super-telephoto options. At this focal length, the combination can produce pronounced background compression and separation, helping birds, wildlife, and athletes stand out against distracting surroundings. The aperture can be stopped down to F22, with adjustments available in 1/3 EV increments for precise exposure control.

High-Speed Linear Motor Autofocus

Fast-moving subjects leave little room for hesitation. The XF400mmF4.5 uses a high-speed linear autofocus motor engineered for fast, quiet, and accurate focusing. This is particularly valuable for birds in flight, wildlife suddenly changing direction, and athletes moving rapidly through the frame. Quiet AF operation is also advantageous when photographers need to minimize unnecessary noise around sensitive wildlife while maintaining the focusing responsiveness required for action photography.

Focus Presets for Faster Reaction Times

The lens incorporates focus preset functionality, giving photographers another way to prepare for action before it happens. Specific focusing positions can be preset so the photographer can respond more efficiently when a subject enters an anticipated area. This can be especially useful around nests, perches, goals, finish lines, or other locations where the photographer knows action is likely to occur. Rather than relying entirely on reactive focusing, the feature helps the photographer stay prepared for decisive moments.

Up to 5.5 Stops of Optical Image Stabilization

At a 609mm-equivalent field of view, even small movements can become highly visible. The XF400mmF4.5 addresses this with up to 5.5 stops of Optical Image Stabilization (OIS), helping reduce the effects of camera shake during handheld photography. This allows photographers to work with greater freedom when a tripod or monopod would be too restrictive, particularly when following moving wildlife or rapidly repositioning along the sidelines. The added stability also makes composing and tracking distant subjects through the viewfinder more manageable.

Advanced 21-Element Optical Design

The lens uses a sophisticated optical construction of 21 elements arranged in 14 groups. This dedicated prime-lens design is engineered around the demanding requirements of a 400mm super-telephoto focal length, where optical imperfections can become particularly noticeable when resolving small details at substantial distances. The result is an optical system designed to preserve the clarity, contrast, and fine detail serious wildlife and sports photographers expect from a specialized long-range lens.

Four ED Elements for Improved Aberration Control

Within the optical formula are four ED (Extra-low Dispersion) elements, which help control chromatic aberrations that can affect image quality at long focal lengths. Better correction helps maintain cleaner edges and more accurate color around high-contrast subjects. This is especially valuable when photographing details such as feathers against a bright sky, athletes against illuminated backgrounds, or wildlife surrounded by highly contrasting natural environments.

Two Super ED Elements for Enhanced Image Quality

In addition to its four ED elements, the XF400mmF4.5 incorporates two Super ED elements for further optical correction. These specialized elements contribute to the lens's ability to preserve fine detail and color accuracy under demanding shooting conditions. For photographers who frequently crop wildlife or sports photographs, strong optical performance is particularly important because small imperfections become more obvious as an image is enlarged.

Super EBC Coating for Better Flare and Ghosting Control

Outdoor photographers cannot always choose the direction or quality of available light. Super EBC (Electron Beam Coating) helps suppress ghosting and flare when strong light enters or approaches the frame. This contributes to cleaner contrast and clearer rendering when photographing backlit wildlife, outdoor sporting events, or subjects under difficult directional lighting, allowing photographers to concentrate more on timing and composition rather than avoiding challenging light altogether.

Nine-Blade Rounded Diaphragm

The XF400mmF4.5 features a nine-blade rounded diaphragm, complementing the strong subject isolation naturally created by its long focal length. The rounded aperture design supports smoother rendering of out-of-focus areas, helping keep attention on the primary subject when backgrounds contain vegetation, spectators, fencing, signage, or other distracting elements. Combined with the 400mm focal length and F4.5 maximum aperture, it gives photographers significant creative control over how the subject is separated from its surroundings.

2.75m Minimum Focusing Distance

Despite its substantial telephoto reach, the lens can focus as close as 2.75m (275cm / 108.3 inches). This gives photographers additional compositional flexibility when a bird, animal, or other subject unexpectedly moves closer. It also enables tighter framing of smaller subjects without requiring the photographer to sacrifice the useful working distance provided by a super-telephoto lens.

0.16x Maximum Magnification

A 0.16x maximum magnification complements the 2.75m minimum focusing distance. While the XF400mmF4.5 is not a macro lens, this capability can be valuable for creating detailed compositions of smaller wildlife, birds, and other outdoor subjects while remaining farther away than would be possible with a conventional short focal length.

Weather-Resistant Construction for Demanding Outdoor Use

Wildlife and outdoor sports rarely take place under perfectly controlled conditions. The WR (Weather Resistant) construction of the XF400mmF4.5 is designed to support photographers working in challenging environments. When paired with a weather-resistant FUJIFILM X Series camera body, it creates a more dependable system for shoots where moisture, dust, cold, and unpredictable weather may be encountered. This allows photographers to concentrate on the subject rather than treating changing outdoor conditions as an immediate reason to stop shooting.

XF1.4X TC WR Teleconverter Compatibility

For situations where 400mm is still not enough, the lens is compatible with the optional FUJINON XF1.4X TC WR teleconverter. This provides photographers with a practical way to increase their effective reach while continuing to use the same lens and camera system. It is particularly useful for small or extremely distant wildlife where physically moving closer may be impossible or undesirable.

XF2X TC WR Teleconverter Compatibility

The XF400mmF4.5 also supports the optional FUJINON XF2X TC WR teleconverter, giving dedicated super-telephoto photographers another level of reach when circumstances demand it. This expandability is valuable for birding, wildlife, and other applications where subjects can remain exceptionally far away. Rather than requiring another specialized lens, photographers can extend the capabilities of the XF400mmF4.5 within the existing FUJIFILM X Series ecosystem.

Fixed-Length Prime Lens Design

The lens measures approximately 239.5mm (9.4 inches) long and maintains that length rather than relying on an extending zoom mechanism. A fixed-length prime design provides predictable handling and balance while photographers move, track subjects, or work from support equipment. For photographers frequently switching between handheld and tripod or monopod shooting, consistent physical dimensions can make the setup easier to manage.

95mm Filter Compatibility

A 95mm front filter thread allows photographers to use compatible filters when their shooting conditions or creative requirements call for them. This adds another layer of versatility for outdoor photographers who incorporate filters into their workflow while retaining the optical and handling advantages of a dedicated super-telephoto prime.

Tripod Collar Foot for Better Supported Shooting

Although the XF400mmF4.5 is specifically designed to make handheld super-telephoto photography more practical, some situations still benefit from a tripod or monopod. The included tripod collar foot provides a more appropriate mounting and balancing point for the lens-and-camera combination. This is particularly useful during extended periods of waiting for wildlife, fixed-position sports coverage, or situations where maximum stability is preferred.

Complete Field-Ready Accessory Package

FUJIFILM equips the lens with the essential accessories needed for transport, protection, and supported shooting. It includes an FLCP-95 front lens cap, RLCP-001 rear lens cap, lens hood, lens pouch, tripod collar foot, and shoulder strap. Including these components helps make the XF400mmF4.5 a more complete field-ready package rather than requiring photographers to purchase basic carrying and protection accessories separately.

Purpose-Built for Wildlife and Bird Photography

The XF400mmF4.5 brings together several features that directly address the challenges of wildlife photography: 609mm-equivalent reach, fast linear AF, focus presets, 5.5-stop OIS, advanced ED optics, weather resistance, and relatively low weight. Photographers can maintain greater distance from sensitive subjects, react to unpredictable movement, and remain mobile while searching for opportunities. That combination makes the lens particularly compelling for bird photographers and wildlife shooters who need substantial reach without committing to an unnecessarily cumbersome setup.

Optimized for Outdoor Sports and Fast Action

The same characteristics translate naturally to outdoor sports. The long focal length lets photographers frame athletes from across a field or from restricted shooting positions, while the high-speed linear AF motor helps respond to rapidly developing action. 5.5-stop OIS supports handheld operation, and the relatively lightweight construction makes repositioning along a sideline easier. Instead of emphasizing reach alone, the XF400mmF4.5 is designed around the combination of reach, responsiveness, stability, and mobility that action photographers actually need.

Professional Super-Telephoto Performance Without Excessive Bulk

Perhaps the strongest overall selling point of the FUJINON XF400mmF4.5 R LM OIS WR Lens is how its individual technologies work together. Photographers get a 400mm F4.5 prime with 609mm-equivalent reach, yet the lens weighs only 1,245g (2.74 lb) and measures 239.5mm (9.4 inches) long. Add fast linear autofocus, focus presets, 5.5-stop stabilization, six specialized ED elements, Super EBC coating, weather resistance, and dual teleconverter compatibility, and the result is a highly specialized super-telephoto designed to deliver serious long-range capability while preserving the mobility that wildlife, bird, and sports photographers depend on.