Fujifilm XF 100-400mm f/4.5-5.6 R LM OIS WR vs Fujifilm XF 50-140mm f/2.8 R LM OIS WR

Both are Fujifilm X mount zooms for sports & action and telephoto — here's how the specs differ and which to pick. Every spec is from the manufacturer's own catalog.

Last verified 2026-09-01 · Fujifilm X mount · prices change — check the retailer

Spec	Fujifilm XF 100-400mm f/4.5-5.6 R LM OIS WR	Fujifilm XF 50-140mm f/2.8 R LM OIS WR
Focal length	100-400mm	50-140mm
Max aperture	f/4.5-5.6	f/2.8
Type	zoom	zoom
Coverage	APS-C	APS-C
Mount	Fujifilm X	Fujifilm X

Which should you buy?

the Fujifilm XF 50-140mm f/2.8 R LM OIS WR opens wider (f/2.8) — brighter in low light and more background blur
the Fujifilm XF 100-400mm f/4.5-5.6 R LM OIS WR covers 100-400mm and the Fujifilm XF 50-140mm f/2.8 R LM OIS WR covers 50-140mm — pick the range that matches what you shoot

Where to buy

Fujifilm XF 100-400mm f/4.5-5.6 R LM OIS WR Lens - Black, Telephoto, Zoom, Weather-Sealed, Robust Construction, X-Mount

Check the Fujifilm XF 100-400mm f/4.5-5.6 R LM OIS WR price on Amazon →

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Check the Fujifilm XF 50-140mm f/2.8 R LM OIS WR price on Amazon →

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FAQ

What's the difference between the Fujifilm XF 100-400mm f/4.5-5.6 R LM OIS WR and the Fujifilm XF 50-140mm f/2.8 R LM OIS WR?
The Fujifilm XF 100-400mm f/4.5-5.6 R LM OIS WR is 100-400mm f/4.5-5.6 zoom, APS-C; the Fujifilm XF 50-140mm f/2.8 R LM OIS WR is 50-140mm f/2.8 zoom, APS-C. Both fit the Fujifilm X mount.

Which is better in low light, the Fujifilm XF 100-400mm f/4.5-5.6 R LM OIS WR or the Fujifilm XF 50-140mm f/2.8 R LM OIS WR?
The Fujifilm XF 50-140mm f/2.8 R LM OIS WR — its f/2.8 maximum aperture lets in more light and gives more background blur than the f/4.5-5.6 of the other.

Do the Fujifilm XF 100-400mm f/4.5-5.6 R LM OIS WR and Fujifilm XF 50-140mm f/2.8 R LM OIS WR fit the same camera?
Yes — both are Fujifilm X mount lenses, so they fit Fujifilm X-T/X-H/X-Pro/X-E/X-S series (APS-C).

Citing these specs? Go ahead — manufacturer data, last verified 2026-09-01. Copy a ready-made reference:

More Fujifilm X comparisons: 7Artisans AF 10mm f/2.8 (APS-C) vs Viltrox AF 9mm f/2.8 Air · Sigma 30mm f/1.4 DC DN Contemporary vs Viltrox AF 35mm f/1.7 Air · 7Artisans AF 27mm f/2.8 vs 7Artisans AF 25mm f/1.8 (APS-C) · 7Artisans AF 27mm f/2.8 vs Meike AF 25mm f/1.7 Air · all Fujifilm X lenses · all comparisons

Fujifilm XF 100-400mm f/4.5-5.6 R LM OIS WRAffiliate linkAmazon →