FUJIFILM XF 400mm f/4.5 R LM OIS WR Lens

FUJIFILM XF 400mm f/4.5 R LM OIS WR Lens
Ultra-Portable Super-Telephoto Prime for Fujifilm X-Series – 600mm Full-Frame Equivalent Focal Length, Bright f/4.5 Maximum Aperture, 5.5-Stop Optical Image Stabilization (OIS), High-Speed Linear Motor (LM) Autofocus with Focus Preset Control, Advanced Optical Construction (4 ED & 2 Super ED Elements), Super EBC Multi-Coating, Arca-Type Compatible Removable Tripod Foot, Weather-Resistant (WR) All-Weather Build, Teleconverter Compatible (1.4x & 2x)

The FUJIFILM XF 400mm f/4.5 R LM OIS WR is a high-performance super-telephoto prime lens engineered specifically for Fujifilm X-mount mirrorless cameras, providing an expansive 600mm full-frame equivalent field of view. Designed to revolutionize handheld super-telephoto capture for wildlife trackers, avian photographers, field sports documentarians, and motorsports visualists, it pairs an impressive optical reach with a bright f/4.5 maximum aperture in an ultra-compact chassis weighing under 3 lb and measuring just 9.4 inches in length.

The intricate optical formula consists of 21 elements in 14 groups, incorporating four Extra-Low Dispersion (ED) elements and two Super ED elements to systematically eliminate chromatic aberrations, axial color fringing, and spherical distortion across high-resolution X-Trans sensors. Fujifilm’s Super EBC (Electron Beam Coating) suppresses ghosting and internal flare to preserve micro-contrast and accurate color rendition in challenging lighting conditions. To facilitate all-day handheld field work, the lens features a 5.5-stop Optical Image Stabilization (OIS) system, complemented by a built-in Arca-type tripod collar foot for instant, secure mounting to tripods and monopods. Focus acquisition is powered by a near-silent Linear Motor (LM) drive system optimized for subject-detection AF algorithms, supported by onboard focus preset buttons for rapid target acquisition. Built for punishing environments, the chassis is thoroughly gasket-sealed against dust and moisture, and maintains full compatibility with Fujifilm’s XF 1.4x and 2x teleconverters for extended reach up to 800mm (1200mm equivalent).

KEY FEATURES & PERFORMANCE HIGHLIGHTS

600mm Equivalent Super-Telephoto Reach: Delivers massive frame compression and distant subject pulling power for wildlife, birding, and professional athletics.

Lightweight Handheld Ergonomics: Compact 9.4″ barrel weighing under 3 lb offers effortless handheld panning and maneuverability in the field.

5.5-Stop Optical Image Stabilization: Minimizes camera shake to maintain tack-sharp results when shooting handheld at slower shutter speeds.

High-Speed Linear Motor (LM) AF: Whisper-quiet, rapid internal focusing designed to integrate with high-speed tracking and AI subject detection.

Advanced ED & Super ED Optics: 4 ED and 2 Super ED elements suppress chromatic aberrations and maximize resolving power on high-megapixel sensors.

Super EBC Multi-Coating: Controls flare, reflections, and ghosting to produce deep contrast and color neutrality in backlit environments.

Onboard Focus Preset Functionality: Enables instant recall of predefined focal distances for fast-moving action and erratic wildlife.

Integrated Arca-Type Tripod Foot: Directly mounts to Arca-Swiss compatible tripod heads and monopods without requiring extra quick-release plates.

Teleconverter Compatibility: Fully compatible with optional XF 1.4x TC WR (560mm / 840mm eq.) and XF 2x TC WR (800mm / 1200mm eq.) teleconverters.

All-Weather WR Construction: Comprehensive environmental seals protect against dust, moisture, and inclement conditions.

TECHNICAL SPECIFICATIONS

Product Type: APS-C Format Super-Telephoto Prime Mirrorless Lens

Model: FUJIFILM XF 400mm f/4.5 R LM OIS WR

Lens Mount: FUJIFILM X-Mount

Format Compatibility: APS-C Format (35mm Equivalent: 600mm)

Focal Length: 400mm

Maximum Aperture: f/4.5

Minimum Aperture: f/22

Optical Design: 21 Elements in 14 Groups (4 ED Elements, 2 Super ED Elements)

Lens Coatings: Super Electron Beam Coating (Super EBC)

Image Stabilization: Optical Image Stabilizer (OIS / 5.5 Stops Compensation)

Autofocus Drive: High-Speed Linear Motor (LM) AF System

Diaphragm Blades: 9 (Rounded Circular)

Tripod Mount: Rotating Tripod Collar with Integrated Arca-Type Quick-Release Foot

Barrel Controls: Focus Preset / AF-L / AF-ON Buttons, OIS On/Off Switch, Focus Limiter Switch, Physical Clicked Aperture Ring

Environmental Resistance: Dust- and Weather-Resistant (WR) Sealing

Teleconverter Support: Fully Compatible with FUJIFILM XF 1.4x TC WR & XF 2x TC WR

Length: Approx. 9.4 inches / 238.8 mm

Weight: Under 3.0 lb / 1360 g

Physical Condition: Operational (Review listing notes/photos for specific cosmetic wear)

Color / Finish: Semi-Gloss Matte Black

Function: Wildlife & Avian Photography, Field & Arena Athletics, Motorsports, Compressed Landscape & Super-Telephoto 4K/6K Video Capture