Fujifilm FUJINON XF 50-140mm F/2.8 R LM OIS WR

The FUJINON XF 50-140mm F/2.8 R LM OIS WR is a telephoto zoom for Fujifilm X APS-C cameras. Its 50–140mm range suits portraits, outdoor sport, stage work and distant wildlife. Fujifilm launched it in 2014 and still builds it today, so it is an established design rather than a new release.

The f/2.8 maximum aperture stays available at every focal length, so you can zoom without losing light. That suits dim venues and helps separate a subject from a busy background. The trade-off is size and weight: this is a substantial lens that rewards deliberate use.

It weighs 2 lb 3.1 oz (995 g) and runs 6.93 in (175.9 mm) long, so it will dominate a compact camera body. The front takes screw-in filters on a 72mm thread, and any filter you attach must match that size.

On the APS-C sensor, 50mm frames portraits tightly and 140mm pulls in distant subjects. That span covers a sideline, a stage or a bird in a tree without changing lenses. Between those ends, the zoom compresses perspective, which flattens a crowd of runners into a tight pack. It also lets you follow one subject as it moves toward you, zooming out from a close 140mm view to a wider 50mm one.

The f/2.8 maximum holds at 140mm as at 50mm. You can zoom to frame a player tighter without the aperture closing and forcing a slower shutter or higher ISO. In an evening stadium or a lit theatre, that extra light matters.

At f/2.8 the lens can blur a background behind a singer or a striker. The effect is strongest at the long end, where tight portraits gain soft, clean surroundings.

Seven aperture blades form the opening that shapes out-of-focus highlights. The closest focusing distance is 3.3 ft (100 cm), comfortable for portraits and mid-distance subjects. At f/2.8 and close portrait distances, depth of field runs shallow, so focus placement matters on an eye.

The built-in stabilization compensates for camera movement when you shoot handheld at 140mm or in a dim venue. It lets you use slower shutter speeds without camera shake. It steadies your framing, not a moving subject, so a sprinting player still needs a fast shutter.

Weather sealing helps guard the lens against dust and moisture during outdoor shoots, and this design carries that protection as a listed feature. The front element has no fluorine coating, so the glass is finished without that treatment.

There is no zoom lock on this lens. That control is absent from the design, so the barrel has no lock to hold it at a chosen focal length.

Inside, 23 elements sit in 16 groups, including low-dispersion and super-low-dispersion glass. Low-dispersion glass helps reduce chromatic aberration, where colours focus at different points and leave coloured fringes along high-contrast edges. Fringes show most along a backlit bird's wing or a bright sideline, the kind of edges this zoom often frames.