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Fujifilm Fujinon XF 18mm f/1.4 R LM WR Review - Performance

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Fujifilm Fujinon XF 18mm f/1.4 R LM WR Performance

The lens shows remarkable edge to edge consistency. The central sharpness is outstanding from f/1.4 through to f/5.6 and excellent from f/8 to f/16. The edges are excellent at f/1.4, outstanding from f/2 to f/5.6 and excellent from f/8 to f/16. Fujifilm has opted to resist the temptation of including f/22, no doubt preferring to maintain that high degree of sharpness throughout the range.



Fujifilm XF 18mm f/1.4 R LM WR MTF Charts

How to read our MTF charts

The blue column represents readings from the centre of the picture frame at the various apertures and the green is from the edges.

The scale on the left side is an indication of actual image resolution and sharpness as LW/PH and is described in detail above. The taller the column, the better the lens performance.

For this review, the lens was tested on a Fujifilm X-S10 using Imatest. Want to know more about how we review lenses?

CA (Chromatic Aberration) is extremely well controlled both centre and edge, perhaps because there is correction within the camera that cannot be switched off, perhaps because of outstanding optical design. Whatever the reason, the result is clean imaging with no trace of colour fringing.


Fujifilm XF 18mm f/1.4 R LM WR Chromatic Aberration Charts

How to read our CA charts

Chromatic aberration (CA) is the lens' inability to focus on the sensor or film all colours of visible light at the same point. Severe chromatic aberration gives a noticeable fringing or a halo effect around sharp edges within the picture. It can be cured in software.

Apochromatic lenses have special lens elements (aspheric, extra-low dispersion etc) to minimize the problem, hence they usually cost more.

For this review, the lens was tested on a Fujifilm X-S10 using Imatest.


Barrel distortion can be measured at -0.19%, which is as close to rectilinear as we could expect. Even macro lenses may not be as good as this, so this is unusual, especially in a wide-angle optic. It may be that in-camera corrections are being applied that cannot be switched off, but again whatever the reason the results are there to be enjoyed.

Flare is well controlled, thanks to the Super EBC multi-coating. The Fujifilm coating techniques are clearly highly effective. It is possible to induce artefacts in the most severe situations where bright light sources are within the edge of the frame, but this does not detract from images in normal circumstances.

Bokeh is very satisfactory, even though it is not normally the forte of wide-angle lenses. No complaints on this count either.

Vignetting is modest and measurements yield the following results.

Aperture Vignetting
f/1.4 -1.2 stops
f/2 -1.3
f/2.8 -1.3
f/4 -1.3
f/5.6 -1.3
f/8 -1.3
f/11 -1.3
f/16 -1.2

Fujifilm XF 18mm f/1.4 R LM WR Sample Photos


Fujifilm XF 18mm f/1.4 R LM WR Aperture range

You can view additional images in our preview, and in the Equipment Database, where you can add your own review, photos and product ratings.

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saltireblue Plus
11 12.2k 76 Norway
15 Jun 2021 4:41PM
Kilcaff 17 51 England
16 Jun 2021 12:57PM
Outstanding lens and great focal length.
No newer fuji lens has distance scale/dof scale so these aren't really cons for the lens for most users, if you're a fuji user I'd consider this 5 and not 4.5 star
leftj 4
16 Jun 2021 1:55PM
The Fuji XF 18mm f 1.4 is not a 35mm equivalent. It is a 27mm equivalent. How can anyone trust a review with glaring errors like this.
16 Jun 2021 2:10PM

Quote:whereas at one time 35mm-equivalent would have been considered a “wide standard”, the 27mm-equivalent of this lens fits in very well with current image-making.

I think this is the section that leftj is referring to. This sentence is accurate and it means that once upon a time on full frame a 35mm lens would have been considered a wide standard, whereas now the 27mm would be happily accepted as our tastes have become wider. This 18mm lens is therefore very acceptable now as a wide standard for many people, being the 27mm-equivalent referred to.
leftj 4
16 Jun 2021 2:23PM
Nope. The reviewer clearly stated this lens is an 35mm equivalent. It is not. It is a 27mm equivalent.
16 Jun 2021 2:29PM
I can see nowhere I say that John, so do please highlight the place you are looking at, it would be much appreciated.
leftj 4
16 Jun 2021 2:50PM
My mistake! I didn't read your whole sentence thoroughly. Please accept my apologies.
16 Jun 2021 3:02PM
Not a problem, thanks John.

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