Specifications#
- Brand
- Fujifilm
- Model
- XF 100-400mm f/4.5-5.6 R LM OIS WR
- Lens type
- Telephoto zoom
- Focal length
- 100–400 mm
- Maximum aperture
- f/4.5–5.6
- Image circle
- APS-C (23.5×15.6 mm)
- Mount(s)
- Fujifilm X-mount
- Projection
- Rectilinear
- Stabilisation
- Yes (optical)
- Autofocus motor
- linear motor (LM)
- Lensfun correction profile
- Yes — distortion/vignetting/TCA
Equivalent focal length on different cameras#
Field of view and depth-of-field equivalence when this lens is used on bodies with different sensor sizes (natively or via an adapter).
| Camera format | At 100 mm | At 200 mm | At 400 mm | Equiv. aperture (DoF) |
|---|---|---|---|---|
| APS-C | 150 mm · 16° | 300 mm · 8° | 600 mm · 4° | f/6.8 |
| APS-C (Canon) | 160 mm · 15° | 320 mm · 8° | 640 mm · 4° | f/7.2 |
| Micro Four Thirds | 200 mm · 12° | 400 mm · 6° | 800 mm · 3° | f/9.0 |
Depth of field & background blur#
Computed on its native APS-C format (CoC 20 µm). “Blur @2 m” is the size of an out-of-focus point at infinity, as a percentage of frame width, with the subject at 2 m — a simple bokeh index. Full table: 105 mm f/5.6 on aps-c.
| Focal | Aperture | at 1 m | at 2 m | at 5 m | at 10 m | Hyperfocal | Blur @2 m |
|---|---|---|---|---|---|---|---|
| 100 mm | f/4.5 | 1.6 cm | 6.7 cm | 43.2 cm | 1.76 m | 114 m | 5.0% |
| 100 mm | f/8 | 2.8 cm | 11.9 cm | 77.1 cm | 3.17 m | 64.0 m | 2.8% |
| 200 mm | f/4.5 | 0.4 cm | 1.6 cm | 10.6 cm | 43.1 cm | 455 m | 21.0% |
| 200 mm | f/8 | 0.6 cm | 2.8 cm | 18.8 cm | 76.8 cm | 256 m | 11.8% |
| 400 mm | f/4.5 | 0.1 cm | 0.4 cm | 2.5 cm | 10.6 cm | 1.8 km | 94.6% |
| 400 mm | f/8 | 0.1 cm | 0.6 cm | 4.5 cm | 18.8 cm | 1.0 km | 53.2% |
Handheld & night-sky limits#
NPF assumes typical 20–24 MP sensors (≈6 µm pixels on full frame, ≈3.9 µm on APS-C, ≈3.3 µm on Micro Four Thirds).
| Body | Min. handheld shutter (longest focal) | 500 rule at 100 mm | NPF at 100 mm, f/4.5 |
|---|---|---|---|
| APS-C | 1/640 s | 3 s | 3 s |
| APS-C (Canon) | 1/640 s | 3 s | 3 s |
| Micro Four Thirds | 1/800 s | 2 s | 3 s |
Compatible cameras#
Bodies in our database with a native Fujifilm X-mount mount. Full-frame bodies switch to an APS-C crop with this lens.
- Fujifilm X-E5 2025
- Fujifilm X-T30 III 2025
- Fujifilm X-M5 2024
- Fujifilm X-T50 2024
- Fujifilm X-S20 2023
- Fujifilm X-H2S 2022
- Fujifilm X-T5 2022
- Fujifilm X-H2 2022
- Fujifilm X-E4 2021
- Fujifilm X-T30 II 2021
- Fujifilm X-S10 2020
- Fujifilm X-T200 2020
- Fujifilm X-T4 2020
- Fujifilm X-A7 2019
- Fujifilm X-Pro3 2019
- Fujifilm X-T30 2019
- Fujifilm X-A5 2018
- Fujifilm X-H1 2018
- Fujifilm X-T100 2018
- Fujifilm X-T3 2018
- Fujifilm X-T20 2017
- Fujifilm X-E3 2017
- Fujifilm X-A3 2016
- Fujifilm X-Pro2 2016
- Fujifilm X-T2 2016
- Fujifilm X-A10 2016
- Fujifilm X-A2 2015
- Fujifilm X-T10 2015
- Fujifilm X-T1 2014
- Fujifilm X-A1 2013
- Fujifilm X-E2 2013
- Fujifilm X-M1 2013
- Fujifilm X-E1 2012
- Fujifilm X-Pro1 2012
- Pentacon Six crop mode
- Fujifilm X-E2s
Adapt it to other systems#
Similar lenses#
- Fujifilm XF 100-400mm f/4.5-5.6 R LM OIS WR + 1.4× conv. f/4.5–5.6
- Fujifilm XF 70-300mm f/4-5.6 R LM OIS WR f/4–5.6
- Fujifilm XF 70-300mm f/4-5.6 R LM OIS WR + 1.4x f/4–5.6
- Fujifilm XF 55-200mm f/3.5-4.8 R LM OIS f/3.5–4.8
- Fujifilm XC 50-230mm f/4.5-6.7 OIS f/4.5–6.7
- Fujifilm XC 50-230mm f/4.5-6.7 OIS II f/4.5–6.7
- Fujifilm XF 50-140mm f/2.8 R LM OIS WR f/2.8
Frequently asked questions#
Is the Fujifilm XF 100-400mm f/4.5-5.6 R LM OIS WR full frame?
No — it is designed for APS-C sensors. On a full-frame body it vignettes or triggers crop mode.
What is the Fujifilm XF 100-400mm f/4.5-5.6 R LM OIS WR equivalent to on APS-C?
Its focal length is already the real value for APS-C: 100–400 mm frames like 153–614 mm on full frame.
What is the Fujifilm XF 100-400mm f/4.5-5.6 R LM OIS WR good for?
As a telephoto zoom it suits sport, wildlife, events and compressed landscapes.
Sources & licences#
- Lensfun lens database — CC BY-SA 3.0
Last updated October 03, 2026 · How we calculate · Sources