Fujifilm has launched the FUJINON XF400mmF4.5 R LM OIS WR, a super-telephoto prime lens that gives photographers a 400mm focal length—or a whopping 609mm equivalent in 35mm terms—while keeping the lens to approximately 1,245 grams.

That combination of reach and relatively low weight is perhaps the lens’s biggest attraction for photographers who have to carry their gear and remain mobile for long shooting sessions.

The XF400mmF4.5 is designed for subjects that are difficult to get physically close to, including wildlife, birds, motorsports and aircraft. Its maximum aperture of F4.5 also gives photographers the ability to work with faster shutter speeds when tracking moving subjects.

For handheld shooting, the lens features optical image stabilisation rated at up to 5.5 stops, according to Fujifilm. The company says improvements in shake detection and the stabilisation mechanism help maintain steady framing at the lens’s extreme focal length.

Built for the field

The lens uses a 21-element, 14-group optical design, including two Super ED and four ED elements. These elements are intended to control chromatic aberration and maintain detail across long-distance shots.

For photographers who need even more reach, the XF400mmF4.5 can be paired with Fujifilm’s teleconverters.

The XF1.4X TC WR takes the combination to 560mm, equivalent to about 853mm in 35mm format, while the XF2X TC WR pushes it to 800mm, or approximately 1,219mm equivalent.

That makes the lens particularly interesting for bird and wildlife photographers, where filling the frame without disturbing the subject can often be the difference between an ordinary shot and a keeper.

The lens also features Fujifilm’s weather-resistant construction, making it suited to outdoor shooting where photographers may have to work in changing conditions.

The XF400mmF4.5 is scheduled to go on sale from mid-September 2026, with a US MSRP of $3,199.95 and a Canadian MSRP of $3,899.99.

With the new lens, Fujifilm is expanding its X-Mount super-telephoto prime range, giving photographers another option for long-distance shooting while putting a greater emphasis on mobility than the sheer size traditionally associated with super-telephoto glass.