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    Removable Rotating Tripod Collar    XF 1.4x TC WR Teleconverter

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 it come with a lens hood?

A: Yes -- not only that it locks so it stays on. Can be reversed for storage and has a little sliding window that lets you adjust polarizers with the hood in place.

Q: 2. What is the filter size? Specs on the Fuji web site indicate that it is 77mm but photos of the lens show 82mm.

A: At of the date of this response (01-15-2016), the only information we have on the Fujifilm XF 100-400mm f/4.5-5.6 R LM OIS WR Lens is the information listed on Fujifilm's website and released in their press release. On their website, Fujifilm states the filter thread size of the XF 100-400mm f/4.5-5.6 R LM OIS WR Lens is 77mm. As the lens has just been announced, but not yet released, you would have to contact Fujifilm directly for more information on the lens at this time. bit.ly/18LIUP9

Q: 3. 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: 4. 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: 5. Most of the photos on the website with this lens look as if the shooters missed focus. Is this the lens, website, or shooter?

A: The Fujifilm XF 100-400mm f/4.5-5.6 R LM OIS WR Lens has good optical performance. I am not sure of the focus issue you are seeing, or if the issue may simply be caused by missed focus, improper exposure, or simply the compression algorithm when uploading the image to the internet. In any case, if you purchase the lens and you are not happy with the performance of the Fujifilm XF 100-400mm f/4.5-5.6 R LM OIS WR Lens, you may return the lens within 30 days for an exchange or a refund.

Q: 6. Will this lens work on a X-E1?

A: Yes, but it is a large lens and will not be well balanced on the X-E1. You could also consider the Fuji grip, which would be somewhat helpful.

Q: 7. 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: 8. Does the 1.4x teleconverter work with other lenses?

A: Works with 3 lenses: XF50-140, XF100-400 and XF80 macro. Yes, it is compatible with the 80mm. I've used it myself that way and the company website confirms it. It's a very sharp TC.

Q: 9. 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: 10. Does the zoom lock switch lock the lens at any zoom distance?

A: Just locks at 100 mm.