The new Fujifilm Fujinon XF 400mm F4.5 R LM OIS WR weather-sealed telephoto lens delivers high optical performance for wildlife, birding, and sports photography, featuring 5.5 stops of optical image stabilization and a 2.74-pound build, according to a hands-on review published by Tom’s Guide on September 4, 2026.
Hands-On With the Fujinon XF 400mm F4.5
Announced on September 4, 2026, the super-telephoto APS-C lens provides a 400mm focal length equivalent to 609mm on a full-frame sensor when paired with Fuji’s X-series mirrorless cameras, according to Tom’s Guide reviewer Nikita Achanta. Fujifilm claims the lens delivers the highest optical performance in the XF lens lineup with a maximum aperture of f/4.5. The optic includes up to 5.5 stops of optical image stabilization (OIS) and complete weather-protection against dust and rain, rated to operate in temperatures as low as 14°F / -10°C.
Pro Tip: When tracking fast-moving subjects like birds in flight, pair the XF 400mm F4.5 with a high-speed camera body like the Fujifilm X-H2S, utilizing bird subject detection and continuous tracking at shutter speeds around 1/8,000s, as demonstrated during field testing in the UK.
Weight and Pricing Comparison
Weighing 2.74 pounds on its own and 4.19 pounds when attached to a Fujifilm X-H2S body, the kit offers balanced weight distribution that prevents fatigue during extended tracking sessions, based on Tom’s Guide’s field testing. For comparison, the OM System OM-1 Mark II paired with the M.Zuiko Digital ED 150-600mm F5.0-6.3 IS weighs 4.55 pounds without a camera body. The retail price for the Fujinon XF 400mm F4.5 is set at $3,200 / £2,499. This positions the lens close to the Nikon NIKKOR Z 400mm f/4.5 VR S at roughly $3,500, while sitting well below premium alternatives such as the Canon RF 400mm F2.8L IS USM, which retails for $14,000 according to product specifications.
Optical Performance and Focus Preset Features
Unlike the Fujifilm Fujinon XF 100-400mm f/4.5-5.6 R LM OIS WR zoom lens—which weighs 3.1 pounds—the fixed-length 400mm prime includes a dedicated Focus Preset memory button on its barrel, as reported by Tom’s Guide. Photographers can toggle the AF-L / Preset / AF switch, aim at a distant target, and press the Set button to memorize an exact focus position. Pressing the black buttons near the front of the barrel instantly snaps focus back to the saved distance, eliminating focus hunting for pre-measured zones in sports or wildlife setups. During testing with birds of prey from Walks with Hawks, including barn owls and peregrine falcons, the lens produced sharp feather detail and soft background bokeh despite moderate lighting conditions.
Did You Know? Long telephoto lenses naturally narrow the angle of view and heavily magnify background elements, allowing moderate apertures like f/4.5 to produce smooth background blur and make distant scenery melt away.
Frequently Asked Questions
What is the price of the Fujifilm Fujinon XF 400mm F4.5 R LM OIS WR?
The lens retails for $3,200 / £2,499, according to Fujifilm’s product announcement.
What is the full-frame equivalent focal length of the XF 400mm F4.5?
On an APS-C sensor X-series camera, the 400mm focal length provides a 609mm full-frame equivalent reach, as reported by Tom’s Guide.
Is the Fujifilm XF 400mm F4.5 weather-sealed?
Yes, the lens is fully protected against dust and rain, and is rated for operation in temperatures down to 14°F / -10°C, per manufacturer specifications.
What does the Focus Preset feature do?
The Focus Preset button allows photographers to save a specific focus distance and instantly snap back to it by pressing buttons on the lens barrel, avoiding the need to re-focus manually.
Want more hands-on camera reviews, breaking wildlife photography gear news, and field tests delivered straight to your inbox? Subscribe to our newsletter or explore our latest lens comparisons to stay up to date.
d, without any additional comments or text. [/gpt3]
Worth a look