A long-reaching zoom optimized for use in harsh climates, the XF 100-400mm f/4.5-5.6 R LM OIS WR Lens is designed for FUJIFILM X-series mirrorless cameras and provides a 152-609mm equivalent focal length range. Ideally suited for wildlife and sports applications, the versatile telephoto range benefits photographing distant, moving subjects, and is reinforced by a twin linear AF motor for fast performance, as well as five stop-effective optical image stabilization to Minimize the appearance of camera shake. Further benefitting its use outdoors, this 100-400mm lens also sports a weather-sealed construction and fluorine-coated front element to guard against dust and moisture from affecting the lens' performance.

In regards to the optical design, this lens incorporates five extra-low dispersion elements and one Super ED element, which reduce chromatic aberrations and color fringing for increased clarity and color accuracy. Additionally, a nine-blade diaphragm contributes to a pleasing bokeh quality when working with selective focus techniques.

X-Mount Lens/APS-C Format    152-609mm (35mm Equivalent)    Aperture Range: f/4.5 to f/22    Five ED Elements, One Super ED Element    Twin Linear Autofocus Motors    Optical Image Stabilization    Weather-Sealed Design, Fluorine Coating    Rounded 9-Blade Diaphragm    XF 1.4x TC WR Teleconverter    77mm UV Filter

Long-reaching telephoto zoom is designed for APS-C-format FUJIFILM X-mount mirrorless cameras and offers a 152-609mm equivalent focal length range.

Five extra-low dispersion elements and one Super ED element are used to greatly reduce color fringing and chromatic aberrations in order to produce high clarity and color fidelity throughout the zoom range.

A five stop-effective optical image stabilization system Minimizes the appearance of camera shake for sharper handheld shooting in low-light conditions and with slower shutter speeds.

Twin linear motors deliver quick, quiet, and smooth autofocus performance that is especially beneficial when working with fast-moving subjects.

A focus limiter switch on the side of the lens barrel lets you constrain the focusing range to either the full range of 5.7' to infinity, or from 16.4' to infinity for faster focusing performance with distant subjects.

The lens body incorporates 13 distinct weather seals in 12 locations to protect against dust and moisture, and to enable worry-free use in inclement conditions and freezing temperatures as low as 14°F. Additionally, a fluorine coating has been applied to the front lens element to guard against smudging, moisture, and dust.

Rounded nine-blade diaphragm contribute to a pleasing out-of-focus quality to benefit the use of selective focus and shallow depth of field techniques.

Zoom-lock switch prevents unwanted zoom creep from occurring and also can be used to maintain the same zoom position while shooting.

A removable, rotating tripod collar allows for well-balanced mounting and shooting when working from a tripod or monopod.

The included lens hood incorporates a sliding window to allow easier adjustment of rotating filters, such as a polarizer, while the hood is installed.

Compatible with optional XF 1.4x TC WR and XF 2x TC WR teleconverters.

Related Questions and Answers

Q: 1. Does the Fujifilm T2 autofocus using the 100-400 lens and the 2X teleconverter?

A: Sorry I haven't used the teleconverter yet, but the 100-400 lens is great.

Q: 2. When you pick up this lens, does it make rattling noise like the 50-140 F2.8 would?

A: I don't own the 50-140, but I do own the 90. This lens makes a similar, but less pronounced clunking noise when powered off. From what I've read, it's a normal result of the focus mechanism.

Q: 3. While using the lens in video mode, does the exposure flicker during a zoom in or out?

A: FUJIFILM XF 100-400mm f/4.5-5.6 R LM OIS WR Lens have variable apertures. If you would be using the lens minimun aperture it will increase and decrease automatically from f/4.5-5.6 or f/9-11 if you would be attaching the Fujifilm 2x Teleconverter. If you select a higher aperture the f-stop won't fluctuate.

Q: 4. Can this lens be hand held w/the Fujifilm Xt-5?

A: The lens does have stabilization and the xt5 has stabilization as well. The lens alone weighs 3lbs. That said if using a fast shutter and bracing you should be able to get great results even hand holding yes.

Q: 5. how would this lens on a Fuji X-T1 compare to a Tamron 150-600 G1 on a Canon 6D. Which would have the better image quality? RegardsKelvin

A: It would be the Fuji lens, IMHO. I had the Tamron lens for awhile, using it on a 7DMkII and I found the images soft. If you want the reach with the 6D, try the Canon 100-400 f/4.5-5.6 II with a 1.4x tc.

Q: 6. Does this lens work with Olympus mirrorless cameras or Panasonic mirrorless cameras as well?

A: Sorry but it's lens mount to the camera is an X mount. The only way it would work is if you have a lens mount converter

Q: 7. What is the weight of this Fuji lens XF 100-400 and what is the weight of the XF 55-200?

A: The 55-200mm is 20.46 oz / 580 g.

Q: 8. Does this lens have a 'focus lock' button, or should I use "back button focus' instead ?

A: There is a lock switch which will prevent lens creep but the lens does not offer a focus a button.

Q: 9. What is the diameter of the widest part of the lens?

A: What Eden P said.

Q: 10. Is lens be well balanced with an XT-4 camera? Can you achieve hand-held shots with the XT-4 or is a tripod needed/better?

A: The FUJIFILM XF 100-400mm f/4.5-5.6 R LM OIS WR Lens is about 3.03 lbs. while the Fugifilm X-t4 is about 1.16 lbs. so they aren't balanced in that regard. In terms of of whether or not you need a tripod is completely dependent on your capability but overall, you do not necessarily need a tripod and it can be used 100% handheld.