Fujifilm X lens

Fujifilm XF100-400mmF4.5-5.6 R LM OIS WR

100–400 mm, f/4.5–5.6, made for APS-C, stabilised. It mounts natively on 13 of our APS-C cameras; on the X-T50 it frames like 150–600 mm.

  • 100–400 mm · 150–600 mm equiv. on X-T50
  • f/4.5–5.6
  • 77 mm filter
  • 1,375 g
  • Stabilised
  • Weather-sealed
210.5 mm long94.8 mm77 mm filter thread
Drawn from Fujifilm's published size: 94.8 × 210.5 mm, at its shortest. Details simplified.

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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.

Every camera in our catalogue this lens mounts on: 13
CameraView (35 mm equiv.)With the cameraFit and maker's notesKit
Fujifilm X-T5150–600 mm1,932 gFits and works
Fujifilm X-T50150–600 mm1,813 gFits and works
Fujifilm X-T30 III150–600 mm1,753 gFits and works
Fujifilm X-T30 II150–600 mm1,753 gFits and works
Fujifilm X-S20150–600 mm1,866 gFits and works
Fujifilm X-S10150–600 mm1,840 gFits and works
Fujifilm X-M5150–600 mm1,730 gFits and works
Fujifilm X-E5150–600 mm1,820 gFits and works
Fujifilm X-E4150–600 mm1,739 gFits and works
Fujifilm X-H2150–600 mm2,035 gFits and works
Fujifilm X-H2S150–600 mm2,035 gFits and works
Fujifilm X-T4150–600 mm1,982 gFits and works
Fujifilm X-Pro3150–600 mm1,872 gFits and works

What it frames

105 mm150 mm150 mm
Highlighted: this lens on the X-T50. A zoom's dashed frame is its longest view.

At its closest (175 cm from the sensor) it fills the frame of the X-T50 with a subject about 12 cm wide.

On the X-T50, to scale

Side view drawn from the published depth of the camera and length of the lens. 1,813 g together.

Every lens with a 77 mm thread

Other telephoto zooms for Fujifilm X

The nearest in focal length, with the numbers that differ.

Questions about this lens

Which cameras does the Fujifilm XF100-400mmF4.5-5.6 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?

100–400 mm frames like 150–600 mm on the X-T50 (1.5x).

What filter size does it take?

77 mm screw-in filters. Every lens with a 77 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
100–400 mm
Maximum aperture
f/4.5–5.6
Lens stabilisation
Yes
Weather sealing
Yes, per the maker
Filter thread
77 mm
Weight
1,375 g
Size (diameter × length)
94.8 × 210.5 mm
Closest focus
175 cm
Maximum magnification
0.19x
Autofocus
Yes
Announced
2016