Fujinon XF18mmF1.4 R LM WR review

The Fujinon XF18mmF1.4 R LM WR is a great lens, but it seems a little close to the existing XF16mmF1.4 R WR

Fujinon XF18mmF1.4 R LM WR
(Image: © Rod Lawton/Digital Camera World)

Digital Camera World Verdict

This is a pretty compact and lightweight lens for a wide-angle f/1.4, and boasts a really neat design and an everyday 62mm filter mount. The optical performance is stellar, even wide open, but there is already a 16mm f/1.4 in the Fujinon lens range, so it feels as if this lens is squeezing into a gap that isn't quite there.


  • +

    Popular 27mm equivalent angle of view

  • +

    Fast f/1.4 maximum aperture

  • +

    Physical aperture ring

  • +

    Powerful linear AF motor


  • -

    Very close in spec to the XF16mmF1.4

  • -

    Internal 'clonking' when powered down

Why you can trust Digital Camera World Our expert reviewers spend hours testing and comparing products and services so you can choose the best for you. Find out how we test.

The Fujinon XF18mmF1.4 R LM WR is the 39th interchangeable lens from Fujifilm, so the company has come a long way in a comparatively short time. This lens the four addition to a small sub-range of fast f/1.4 primes, from a 16mm f/1.4, the widest, through to a 35mm f/1.4, the longest.

The new lens is only 2mm longer in focal length than the existing XF16mmF1.4, but there is more to this than just focal length, given that the 16mm lens is now six years old, does not have the linear motor (LM) AF of the new 18mm, and has a different optical configuration.

The Fujinon XF18mmF1.4 R LM WR is close in specifications to the older
Fujinon XF16mmF1.4, but is a more modern and efficient design.


(Image credit: Rod Lawton/Digital Camera World)

Construction: 15 elements in 9 groups, including 3 aspherical and 1 ED element
Focal length: 18mm (27mm equivalent)
Angle of view: 76.5°”
Max. aperture: F1.4
Min aperture: F16”
Aperture blades: 9 (rounded diaphragm opening)
Minimum Object Distance: 0.2m
Max. magnification: 0.15x
Dimensions: 68.8mm x 75.6mm

Weight: 370g

Filter size: 62mm

Key features

(Image credit: Rod Lawton/Digital Camera World)

Fujifilm has designed this lens to be compact and light while maintaining first rate optical performance. The optical path consists of 15 elements in 9 groups, which is pretty sophisticated for a prime lens, and includes three aspherical elements and one ED element (the older 16mm f/1.4 is slightly simpler with 13 elements in 11 groups, two aspherical elements and two ED elements).

The Fujinon XF18mmF1.4 R LM WR is close in specifications to the older Fujinon XF16mmF1.4, but is a more modern and efficient design.

With a length of 75.6mm and a weight of 370g, the Fujinon XF18mmF1.4 R LM WR is pretty light and compact for such fast wide-angle lens, and this is where the smaller APS-C format does have an advantage over full frame systems – though you will not get the same degree of background blur and separation that you would from a full frame f/1.4.

The LM in the name refers to the use of a linear motor for AF actuation. These are fast, powerful and near-silent, so this lens should be ideal both for stills and video.

The linear motor drives a focus group of six lens elements with a total travel of just 2.5mm – Fujifilm says this combination means the lens can move from its closest focus distance to infinity in just 2.5sec, and that autofocus speeds can be as fast as 0.04sec.

The new lens is also weatherproofed (hence the ‘WR’ in the name), with a metal barrel and weather seals in 8 locations. It’s also designed to work in temperatures as low as -10 Centigrade.

Like most (but not all) Fujinon lenses, this one has a physical aperture ring, with a push-button lock on the ‘A’ setting. It’s the idea companion for X-series cameras with shutter speed dials rather than mode dials, but will of course work fine on any X-mount camera.

Build and handling

(Image credit: Rod Lawton/Digital Camera World)

The Fujinon XF18mmF1.4 R LM WR’s comparatively light weight and compact design is welcome, given that most of Fujifilm’s X-series cameras are themselves pretty small. It handles pretty well on the X-S10, for example, and on the new X-E4.

The design is so straightforward that there is not much to comment on. There’s no focus distance scale or depth of field markings, but these can be displayed in the camera viewfinder. The aperture ring is clear and positive – and the huge range of apertures available is a reminder of the advantage and scope of fast prime lenses over regular zooms!

However, there is a heavy knocking sound inside this lens when the camera is switched off or the lens is removed. We noticed this in our pre-production sample and it's present in our production sample too. This disappears when the lens was fitted to a camera and the camera was switched on. It didn’t seem to affect performance and it seems likely that this might be the internal AF group not being ‘parked’ when it’s not powered up. It's probably doing no harm (we hope) but we can't say we like it.


• All our sample images are from a pre-production version of this lens but the lab tests were carried out with a full production sample.

Fujinon XF18mm F1.4 R LM WR (pre-production sample): No visible distortion, no chromatic aberration or corner shading. Images look sharp, clear and aberration-free. (Image credit: Rod Lawton/Digital Camera World)

Fujinon XF18mm F1.4 R LM WR (pre-production sample, tonal adjustments in Adobe Camera Raw): This lens is a good general-purpose wideangle prime. (Image credit: Rod Lawton/Digital Camera World)

Fujinon XF18mm F1.4 R LM WR (pre-production sample, tonal adjustment in Adobe Camera Raw). Even at f/1.4, the detail is clear and full of contrast. (Image credit: Rod Lawton/Digital Camera World)

Fujinon XF18mm F1.4 R LM WR (pre-production sample). There's no significant color fringing even with that classic tricky subject – fine leaves and twigs against a bright sky. The image below is another example. (Image credit: Rod Lawton/Digital Camera World)

Fujinon XF18mm F1.4 R LM WR (pre-production sample). (Image credit: Rod Lawton/Digital Camera World)

Fujinon XF18mm F1.4 R LM WR (pre-production sample). The 0.2m minimum focus distance means you can really exaggerate the size of small objects in the foreground. (Image credit: Rod Lawton/Digital Camera World)

Fujinon XF18mm F1.4 R LM WR (pre-production sample). Another example of this lens's distortion-free rendering of straight lines and its edge to edge sharpness. (Image credit: Rod Lawton/Digital Camera World)

We took wide variety of shots in different conditions and at different aperture settings and the results were impressive. Our pre-production sample was possibly a fraction softer at f/1.4 than at smaller apertures, but our lab tests on a full production version show terrific resolution even wide open.

In fact, our real world images showed impressive edge to edge sharpness, no visual distortion, no chromatic aberration – even with fine twigs and leaves against a bright sky – and no perceptible corner shading.

Lab results

We run a range of lab tests under controlled conditions, using the Imatest Master testing suite. Photos of test charts are taken across the range of apertures and zooms (where available), then analyzed for sharpness, distortion and chromatic aberrations.

We use Imatest SFR (spatial frequency response) charts and analysis software to plot lens resolution at the centre of the image frame, corners and mid-point distances, across the range of aperture settings and, with zoom lenses, at four different focal lengths. The tests also measure distortion and color fringing (chromatic aberration).


(Image credit: Future)

Sharpness in the centre of frame is nothing short of superb, even wide open at f/1.4, and remains so right through to f/8. Inevitably for such a wide-angle lens, mid-frame and corner sharpness appear much less impressive, but this is in large part due to the need to photograph our big, flat lens testing chart at such close range. This results in the corners of the chart being much further away from the lens than the centre of the chart. No ultra-wide lens can maintain peak sharpness over such a relatively deep depth of field at this focus distance, especially at larger apertures.


(Image credit: Future)

Levels of fringing are negligible in the centre and mid-frame, and are barely visible to the naked eye even in the corners of frame – an impressive result, right through the aperture range.

Distortion: -0.22

Helped by embedded auto distortion correction which can't be disabled, the lens produces a near distortion-free image. These scores do not necessarily show the 'true' nature of this lens' optical distortion, but since the in-camera JPEGs will be corrected and even raw files have a correction profile embedded in them, it's a moot point.


(Image credit: Digital Camera World)

The Fujinon XF18mmF1.4 R LM WR does seem a slightly odd addition to the Fujinon lens range, given that there is already an XF16mmF1.4, but that is a six-year-old lens while this one is a brand new design. It’s unlikely you would buy both.

The design is clean and uncomplicated – almost spartan, in fact – and the performance is pretty stellar. 28mm f/1.4 is a fairly common configuration for full frame cameras, but APS-C owners are pretty short-changed when it comes to fast primes – unless you are a Fujifilm user. This is where Fujifilm has made its mark. Fujifilm cameras are very good in themselves, but the range of premium quality X-mount lenses sets it apart in the APS-C market.

Read more:

Best Fujifilm lenses
Best Fujifilm cameras
Best wide-angle lenses
Best mirrorless cameras
Best lenses to buy

Thank you for reading 5 articles this month* Join now for unlimited access

Enjoy your first month for just £1 / $1 / €1

*Read 5 free articles per month without a subscription

Join now for unlimited access

Try first month for just £1 / $1 / €1

Rod Lawton

Rod is an independent photography journalist and editor, and a long-standing Digital Camera World contributor, having previously worked as DCW's Group Reviews editor. Before that he has been technique editor on N-Photo, Head of Testing for the photography division and Camera Channel editor on TechRadar, as well as contributing to many other publications. He has been writing about photography technique, photo editing and digital cameras since they first appeared, and before that began his career writing about film photography. He has used and reviewed practically every interchangeable lens camera launched in the past 20 years, from entry-level DSLRs to medium format cameras, together with lenses, tripods, gimbals, light meters, camera bags and more. Rod has his own camera gear blog at fotovolo.com but also writes about photo-editing applications and techniques at lifeafterphotoshop.com