Fujifilm has been a niche player for many years, producing professional quality cameras and lenses, many with unique designs such as the ranges of medium format film rangefinder cameras.

Excellent sharpness; Fast and silent AF; Highly effective OIS; Very well controlled CA; Close focusing; Great handling; Compact design; Weather Resistance

Edge performance dips at longer focal lengths

Love it

The Fujifilm XF 100-400mm F4.5-5.6 R LM OIS WR lens offers outstanding image quality, excellent construction and weather-proofing, quick, quiet and reliable auto-focusing, and very effective image stabilisation, not to mention the longest focal length of any XF lens.

Fujifilm's mirrorless camera system has a very strong lineup of lenses behind it, ranging from the ultra-wide zoom Fujinon XF 10-24mm F4 R OIS all the way up to the Fujinon XF 100-400mm f/4.5-5.6 R LM OIS WR ($1,899), a telephoto beast that is sure to make wildlife and sports photographers very...

Superb optics; Long telephoto reach; Weather-resistant design; Teleconverter compatibility; Includes removable tripod foot and hood

Large for a mirrorless lens; Pricey

Fujifilm's mirrorless camera system has a very strong lineup of lenses behind it, ranging from the ultra-wide zoom Fujinon XF 10-24mm F4 R OIS ($895.00 at Amazon) all the way up to the Fujinon XF 100-400mm f/4.5-5.6 R LM OIS WR ($1,899), a telephoto beast that is sure to make wildlife and sports photographers very happy. It's an excellent lens from an optical standpoint, but one that's surprisingly large when you consider that it's matched with a mirrorless system that utilizes the APS-C sensor size. But it will pair well with Fuji's pro X-T1 ($1,299.00 at Amazon) body, and it's overall performance makes it an Editors' Choice. DesignWhen I first saw the 100-400mm I was shocked at its size and heft. It measures 8.3 by 3.7 inches (HD), weighs about 3 pounds, and supports 77mm front filters. It's bigger than the Canon EF 100-400mm f/4.5-5.6L IS II USM ($2,199.00 at Adorama) (7.6 by 3.7 inches, 3.6 pounds), a lens that covers a full-frame SLR sensor. When you pair the Canon zoom wi...

The Fujifilm Fujinon XF 100-400mm f/4.5-5.6 R LM OIS WR is a standout telephoto lens, but one that won't balance well on smaller cameras.

Superb optics; Long telephoto reach; Weather-resistant design; Teleconverter compatibility; Includes removable tripod foot and hood

Large for a mirrorless lens; Pricey

I had been looking forward to getting this lens and was keeping an eye on the price. I was frankly a bit surprised when I saw it advertised on Amazon at the cheapest price when I was ready to buy, but being a Prime member I saw this as a bit of a bonus.

As the only lens in Fuji's lineup that reaches as long as it does, this is a case of if you need a lens to do this, you really don't have any other brand-name choices. Fortunately, it's a capable performer, and I have no doubt Fuji will sell a lot of these lenses.

The Fujinon XF 100-400mm f/4.5-5.6 R LM OIS WR impressed me quite a bit - not only in the lab but also in the real life. Honestly I was almost about to purchase the lens from the rental company (but I kept my sanity). The center sharpness is very high throughout the zoom range.

I shot my last professional motorsports event of the year with this lens on an X-T2 with Vertical Power Booster Grip, and it and the camera body exceeded my expectations. At "working apertures" f/5.6 to f/14, and up to 350 mm, this lens is VERY sharp. Also very fast AF.

Excellent image quality and very fast AF on an X-T2; Excellent reach for sports including motorsports; This lens is MUCH better in every respect, most notably image quality; than the original Canon 100-400 L IS

The only con I can list is it would be nice to be able to lock the zoom at any focal length so the lens barrel does not rack out to full length when I walk from corner to corner ar the racetrack

Bought this a few months back and for some reason my review disappeared. Anyhow, this is the one and only wildlife lens for the Fuji X system. Yes its big for mirrorless, yes its plastic in parts, but IQ is surprisingly good even with the 1.4TC.