Fujifilm X lens
Fujifilm XF400mmF4.5 R LM OIS WR
400 mm, f/4.5, made for APS-C, stabilised. It mounts natively on 13 of our APS-C cameras; on the X-T50 it frames like 600 mm.
- 400 mm · 600 mm equiv. on X-T50
- f/4.5
- 95 mm filter
- 1,245 g
- Stabilised
- Weather-sealed
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On your camera
The view, the weight with the camera (battery and card included) and what the maker says about each pair.
| Camera | View (35 mm equiv.) | With the camera | Fit and maker's notes | Kit |
|---|---|---|---|---|
| Fujifilm X-T5 | 600 mm | 1,802 g | Fits and works | |
| Fujifilm X-T50 | 600 mm | 1,683 g | Fits and works | |
| Fujifilm X-T30 III | 600 mm | 1,623 g | Fits and works | |
| Fujifilm X-T30 II | 600 mm | 1,623 g | Fits and works | |
| Fujifilm X-S20 | 600 mm | 1,736 g | Fits and works | |
| Fujifilm X-S10 | 600 mm | 1,710 g | Fits and works | |
| Fujifilm X-M5 | 600 mm | 1,600 g | Fits and works | |
| Fujifilm X-E5 | 600 mm | 1,690 g | Fits and works | |
| Fujifilm X-E4 | 600 mm | 1,609 g | Fits and works | |
| Fujifilm X-H2 | 600 mm | 1,905 g | Fits and works | |
| Fujifilm X-H2S | 600 mm | 1,905 g | Fits and works | |
| Fujifilm X-T4 | 600 mm | 1,852 g | Fits and works | |
| Fujifilm X-Pro3 | 600 mm | 1,742 g | Fits and works |
What it frames
At its closest (275 cm from the sensor) it fills the frame of the X-T50 with a subject about 15 cm wide.
On the X-T50, to scale
Other telephoto primes for Fujifilm X
The nearest in focal length, with the numbers that differ.
- Fujifilm XF500mmF5.6 R LM OIS WR750 mm equiv. · f/5.6 · 1,335 g (+90 g) · 95 mmCompare
- Fujifilm XF200mmF2 R LM OIS WR300 mm equiv. · f/2 · 2,265 g (+1020 g) · 105 mmCompare
Questions about this lens
Which cameras does the Fujifilm XF400mmF4.5 R LM OIS WR fit?
13 APS-C cameras in our catalogue: X-T5, X-T50, X-T30 III, X-T30 II, X-S20, X-S10, X-M5, X-E5, X-E4, X-H2, X-H2S, X-T4, X-Pro3.
What does it frame like on APS-C?
400 mm frames like 600 mm on the X-T50 (1.5x).
What filter size does it take?
95 mm screw-in filters. Every lens with a 95 mm thread.
Where these facts come from
Facts checked 9 Oct 2026 against the makers' specification pages. How we check
Size, weight, filter thread, close focus and magnification are Fujifilm's published figures. We have not tested this lens; for image quality, read reviews from people who have.
Specifications
- Mount
- Fujifilm X
- Made for
- APS-C sensors
- Focal length
- 400 mm
- Maximum aperture
- f/4.5
- Lens stabilisation
- Yes
- Weather sealing
- Yes, per the maker
- Filter thread
- 95 mm
- Weight
- 1,245 g
- Size (diameter × length)
- 104.5 × 239.5 mm
- Closest focus
- 275 cm
- Maximum magnification
- 0.16x
- Autofocus
- Yes
- Announced
- 2026