Fujifilm · super-telephoto zoom
Fujinon XF100-400mmF4.5-5.6 R LM OIS WR
100–400mm f/4.5–5.6
Short answer
The Fujinon XF100-400mmF4.5-5.6 R LM OIS WR is a super-telephoto zoom for the Fujifilm X mount. It covers 100–400 mm, which frames like 150–600mm on a 35mm camera, and opens to f/4.5–5.6. Autofocus is built in.
It has optical stabilization, weather sealing, an aperture ring, and a linear focus motor. The optics are 21 elements in 14 groups, including 5 extra low dispersion elements and 1 super extra low dispersion element. The aperture has 9 blades and stops down to f/22. It focuses as close as 1.75 m, for a maximum magnification of 0.19×. Filters thread on at 77 mm.
It weighs 1375 g and measures ⌀94.8 × 210.5 mm.
It mounts on all 34 X mount cameras in the catalog, among them the X-T5, X-T50, X-E5, X-M5, and X-T30 III. Fixed-lens models such as the X100 series are out by definition.
The same category holds 4 other X mount lenses. Among them, the fastest is the Fujinon XF200mmF2 R LM OIS WR at f/2 and the lightest one under it is the Fujinon XF500mmF5.6 R LM OIS WR at 1335 g.
Full specifications
- Focal range
- 100–400mm
- Maximum aperture
- f/4.5–5.6
- 35mm equivalent
- 150–600mm
- Mount
- Fujifilm X
- Weight
- 1375 g
- Filter thread
- ⌀77 mm
- Minimum focus
- 1.75 m
- Brand
- Fujifilm
- Lens type
- zoom · super-telephoto
- Minimum focal length
- 100 mm
- Maximum focal length
- 400 mm
- Minimum aperture
- f/22
- Aperture blades
- 9
- Angle of view
- 16.2°- 4.1°
- Lens construction
- 21 elements in 14 groups
- Special elements
- 5 extra low dispersion elements and 1 super extra low dispersion element
- Maximum magnification
- 0.19×
- Size (⌀ × length)
- ⌀94.8 × 210.5–270 mm
- Stabilisation
- Optical stabilisation
- Weather resistant
- Yes
- Aperture ring
- Yes
- Focus
- Autofocus
Specifications from the manufacturer: fujifilm-x.com
- Optical stabilisation
- Weather resistant
- Linear motor
- Aperture ring
What it suits
| Birds and wildlife | Excellent | |
|---|---|---|
| Sports | Poor | |
| Portrait | Poor | |
| Travel | Good | |
| Street | Poor | |
| Weddings | Poor | |
| Walk around | Good | |
| Vlogging | Poor | |
| Landscape | Poor | |
| Macro | Poor |
Scored from the published specifications — focal length, aperture, stabilisation, weather sealing and weight. Sharpness, bokeh and rendering are not in a spec sheet and are not scored here.
Similar lenses
- Fujinon XF100-400mmF4.5-5.6 R LM OIS WR vs Fujinon XF150-600mmF5.6-8 R LM OIS WR
- Fujinon XF100-400mmF4.5-5.6 R LM OIS WR vs Fujinon XF200mmF2 R LM OIS WR
- Fujinon XF100-400mmF4.5-5.6 R LM OIS WR vs Fujinon XF500mmF5.6 R LM OIS WR
- Fujinon XF100-400mmF4.5-5.6 R LM OIS WR vs Tamron 150-500mm F5-6.7 Di III VC VXD
Fits these cameras
lens.faqTitle
What is the Fujinon XF100-400mmF4.5-5.6 R LM OIS WR equivalent focal length?
On 35mm it frames like 150–600mm, because the APS-C sensor changes the angle of view.
Does the Fujinon XF100-400mmF4.5-5.6 R LM OIS WR have stabilization?
Yes, it has optical stabilization of its own.
Is the Fujinon XF100-400mmF4.5-5.6 R LM OIS WR weather sealed?
Yes, it is listed as weather resistant.
How much does the Fujinon XF100-400mmF4.5-5.6 R LM OIS WR weigh?
1375 g.
What filter size does the Fujinon XF100-400mmF4.5-5.6 R LM OIS WR take?
77 mm screw-in filters.
Which cameras does the Fujinon XF100-400mmF4.5-5.6 R LM OIS WR fit?
Any Fujifilm body with the X mount, which is 34 models in this catalog.
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Last updated September 22, 2026