This is a super-telephoto prime for Fujifilm X bodies, and Fujifilm announced it in September 2026. On APS-C it frames like a 609mm lens on full frame. Fujifilm built it to be carried: it weighs 1,245g.
Fujifilm's two teleconverters fit it. The XF1.4X TC WR takes it to 560mm (853mm equivalent) and the XF2X TC WR to 800mm (1,219mm equivalent).
We haven't shot with this lens. The figures come from the sources below; the pairings are our judgement from those figures.
Specifications
| Focal length | 400mm (609mm equivalent) |
|---|---|
| Aperture | F4.5 to F22, 9 rounded blades |
| Elements and groups | 21 elements in 14 groups, including 4 ED and 2 Super ED |
| AF motor | Linear motor |
| Minimum focus | 2.75m from the focal plane |
| Maximum magnification | 0.16x |
| Filter | 95mm |
| Weight | 1,245g without cap and hood |
| Size | 104.5mm diameter, 239.5mm long |
| Weather sealing | Sealed in 20 places, works down to -10°C, fluorine-coated front element |
| Stabilisation (OIS) | Yes, up to 5.5 stops |
Launch date and price
Fujifilm announced it from Tokyo on 4 September 2026, and it went on sale in Japan on 18 September 2026. The US price is $3,199.95 and the Canadian price is $3,899.99. Japan has no list price: Impress expected about ¥491,700. We found no official euro or pound price.
Who it suits
Bird, wildlife, aircraft and motorsport photographers who want more reach than a telephoto zoom gives and a lens they can still hand-hold. It is not a walkaround lens: the 2.75m minimum focus rules out most close work.
Cameras it pairs well with
The X-H2S has a stacked sensor for fast subjects. The X-H2 and X-T5 have 40MP sensors, which leave more room to crop a distant subject. At this weight a body with a deep grip helps.
Recipe pairings
We have no recipe made for wildlife yet, so these are the closest fits: true colour for plumage, something for flat grey days, and hard black and white for shapes against the sky.
Faithful Reala Ace colour with slightly softer highlights, so feathers and liveries stay close to what you saw.


Open WindowMade for overcast days, which is when a lot of bird and airshow pictures get taken.


Grey MatineeHigh-contrast Acros for a bird or aircraft in silhouette against a bright sky.


Hy Contrast BnwFilm simulations to try
Where to buy
Questions
How much does the Fujinon XF400mm F4.5 cost?
The US price is $3,199.95 and the Canadian price is $3,899.99. Fujifilm sells it at open pricing in Japan, where Impress expected about ¥491,700.
What is the XF400mm F4.5 equivalent to on full frame?
Fujifilm gives 609mm. With the XF1.4X TC WR it is 853mm equivalent, and with the XF2X TC WR it is 1,219mm equivalent.
Is the XF400mm F4.5 stabilised and weather sealed?
Yes. Fujifilm rates the stabilisation at up to 5.5 stops. The barrel is sealed in 20 places and is rated down to -10°C.
Provia
Velvia