Fujifilm rounds out its sports and wildlife trio with a 400mm F4.5

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The XF 400mm F4.5 shares nearly the same optical design as the XF 500mm F5.6, but Fujifilm claims it will offer better sharpness.

Large telephoto camera lens with tripod mount, black finish, positioned horizontally against a dark background; glass elements visible at the front reflecting light.

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Fujifilm has announced the Fujinon XF 400mm F4.5 R LM OIS WR, a new super-telephoto prime lens for its APS-C X-mount system. The company says the lens delivers exceptional sharpness in a relatively compact package aimed at wildlife and sports photographers.

The XF 400mm F4.5 is positioned as a sister lens to the previously released XF 500mm F5.6 R LM OIS WR. Alongside the XF 200mm F2 R LM OIS WR, which Fujifilm sees as a set, the three lenses cover full-frame-equivalent focal lengths from roughly 305mm to 762mm.

Large white Fujinon camera lens with tripod mount shown horizontally on a black background, details and controls clearly visible.

The new 400mm F4.5 provides a 609mm equivalent focal length on X-mount cameras. It is also compatible with Fujifilm’s 1.4x and 2.0x teleconverters, providing equivalent focal lengths of 852mm and 1219mm, respectively. It offers 5.5 stops of optical image stabilization and is weather resistant with 20 sealed points, two must-have features for most wildlife and sports photographers.

Fujifilm says the 400mm lens shares a nearly identical optical design to the 500mm, with some slight changes to the rear group. It features 21 elements in 14 groups, which include 4 ED and 2 super ED elements. According to Fujifilm, its engineering team in Japan says the 400mm is sharper than the 500mm. It is also slightly lighter than its 500mm sibling, weighing 1245g (2.7 lbs). It measures 239.5mm (9.4′) long with a 104.5mm (4.1′) diameter. The lens is compatible with 95mm filters.

Close-up of a metallic camera lens control panel with engraved labels, featuring switches for focus range, image stabilization (OIS), focus mode options (AF, MF, and preset), and a SET button.

The XF 400mm F4.5 uses a linear motor for autofocus, which Fujifilm says results in silent operation. It can focus as close as 2.7m (9′) and offers a maximum magnification of 0.16. There is a focus limiter switch to prevent it from focusing closer than 5m away, resulting in faster autofocus when photographing distant subjects. Near the front of the barrel, a Focus Control button works in tandem with a Focus Select switch, allowing photographers to choose whether the button activates autofocus, locks AF, or recalls a preset focus distance.

The XF 400mm F4.5 R LM OIS WR will be available sometime in mid-September for $3200. That’s a $200 premium over the XF 500 mm’s launch price, but that lens now retails for $3599 due to tariff-related price increases.

White Fujifilm telephoto camera lens with large front element, focus and zoom rings, control switches, and a tripod mounting foot, shown angled on a plain background.

Fujifilm XF 400mm F4.5 R LM OIS WR

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About the Author: Abby Ferguson holds an MFA in photography and blends a fine-art background with extensive editorial and commercial experience. She built and led an in-house imaging program for a large vacation rental company and has served as an associate editor at Popular Photography. She also teaches at a local community college and serves on its Photographic Technology Program Advisory Board, sharing her knowledge and enthusiasm for the medium.

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