Compare
Fujinon XF18mmF1.4 R LM WR vs Fujinon XF23mmF2.8 R WR
Short answer
The Fujinon XF18mmF1.4 R LM WR (18mm) and Fujinon XF23mmF2.8 R WR (23mm) are both wide-angle lenses for the Fujifilm X mount. The Fujinon XF18mmF1.4 R LM WR is the faster lens at f/1.4 against f/2.8 on the Fujinon XF23mmF2.8 R WR.
Fujinon XF23mmF2.8 R WR: 3 specs ahead
Side by side
| Fujinon XF18mmF1.4 R LM WR | Fujinon XF23mmF2.8 R WR | |
|---|---|---|
| Brand | Fujifilm | Fujifilm |
| Focal length | 18mm | 23mm |
| 35mm equivalent | 27mm | 35mm |
| Maximum aperture | f/1.4 | f/2.8 |
| Mount | Fujifilm X | Fujifilm X |
| Autofocus | Yes | Yes |
| Optical stabilisation | No | No |
| Weather resistant | Yes | Yes |
| Aperture ring | Yes | Yes |
| Macro | No | No |
| Linear motor | Yes | No |
| Minimum aperture | f/16 | f/16 |
| Aperture blades | 9 | 11 |
| Lens construction | 15 elements in 9 groups | 8 elements in 6 groups |
| Special elements | 3 aspherical and 1 ED elements | 2 aspherical elements |
| Angle of view | 76.5° | 63.4° |
| Minimum focus | 0.2 m | 0.2 m |
| Maximum magnification | 0.15× | 0.15× |
| Weight | 370 g | 90 g |
| Diameter | ⌀68.8 mm | ⌀61.8 mm |
| Length | 75.6 mm | 23 mm |
| Filter thread | ⌀62 mm | ⌀39 mm |
Where each one is ahead
Reasons to choose the Fujinon XF18mmF1.4 R LM WR
- Wider view 27 mm vs 35 mm
- Maximum aperture f/1.4 vs f/2.8
Reasons to choose the Fujinon XF23mmF2.8 R WR
- Longer reach 35 mm vs 27 mm
- Weight 90 g vs 370 g
- Diameter ⌀61.8 mm vs ⌀68.8 mm
- Length 23 mm vs 75.6 mm
Both have weather sealing and an aperture ring.
Neither has optical stabilisation and a macro design.
Framing and reach
| Lens | Frames like | Horizontal view | Frame width at 10 m |
|---|---|---|---|
| Fujinon XF18mmF1.4 R LM WR | 27 mm | 66.3° | 13.1 m |
| Fujinon XF23mmF2.8 R WR | 35 mm | 54.1° | 10.2 m |
The Fujinon XF23mmF2.8 R WR gets 1.3× closer to the subject than the Fujinon XF18mmF1.4 R LM WR: whatever it points at fills 1.3× more of the frame edge to edge, or 1.7× more of its area. With the Fujinon XF18mmF1.4 R LM WR you would have to walk about 23% of the distance towards the subject to get the same picture — or crop it later, which leaves roughly 60% of the original pixels.
Angles and widths are calculated from focal length and sensor width, horizontally, on the native sensor of each mount.
Size and weight
- The Fujinon XF23mmF2.8 R WR is 280 g lighter than the Fujinon XF18mmF1.4 R LM WR, about 76% less.
- The Fujinon XF18mmF1.4 R LM WR is 52.6 mm longer.
- The Fujinon XF18mmF1.4 R LM WR is 7 mm wider.
- The Fujinon XF18mmF1.4 R LM WR takes ⌀62 mm filters and the Fujinon XF23mmF2.8 R WR ⌀39 mm, so filters are not shared.
What each one suits
| Fujinon XF18mmF1.4 R LM WR | Fujinon XF23mmF2.8 R WR | |
|---|---|---|
| Birds and wildlife | Poor | Poor |
| Sports | Poor | Poor |
| Portrait | Poor | Fair |
| Travel | Very good | Excellent |
| Street | Excellent | Excellent |
| Weddings | Excellent | Very good |
| Walk around | Excellent | Excellent |
| Vlogging | Good | Fair |
| Landscape | Excellent | Excellent |
| Macro | Poor | Poor |
Scored from the published specifications — focal length, aperture, stabilisation, weather sealing and weight. Sharpness, bokeh and rendering are not in a spec sheet and are not scored here.
Cameras that take both
Both lenses fit every interchangeable-lens X Series body — 34 in our list. Fixed-lens models such as the X100 series cannot take them.
Which one to choose
Choose the Fujinon XF18mmF1.4 R LM WR if
- low light is the priority. At f/1.4 it lets in 2 stops more than f/2.8 — faster shutter speeds indoors and softer backgrounds.
- you want more in the frame. It starts at 27 mm equivalent, against 35 mm on the other lens — interiors, landscapes and groups at close range.
Choose the Fujinon XF23mmF2.8 R WR if
- your subject is far away. It magnifies 1.3× more, and walking closer is not always an option.
- weight matters to you. It is 280 g lighter, roughly 76% less to carry.
Everything above comes from published specifications. How sharp each lens is, how quickly it focuses and what its pictures look like are not in any spec sheet, so this comparison does not try to judge them.
Common questions
Which is lighter, the Fujinon XF18mmF1.4 R LM WR or the Fujinon XF23mmF2.8 R WR?
The Fujinon XF23mmF2.8 R WR, by 280 g — about 76% less.
Which is better in low light, the Fujinon XF18mmF1.4 R LM WR or the Fujinon XF23mmF2.8 R WR?
The Fujinon XF18mmF1.4 R LM WR. At f/1.4 against f/2.8 it gathers 2 stops more light, which matters without flash and for background blur. Stabilisation can offset some of that for still subjects, but not for moving ones.
Do the Fujinon XF18mmF1.4 R LM WR and Fujinon XF23mmF2.8 R WR use the same filters?
No. The Fujinon XF18mmF1.4 R LM WR takes ⌀62 mm and the Fujinon XF23mmF2.8 R WR ⌀39 mm. A step-up ring lets the smaller lens use the larger filters.
Will both lenses fit my camera?
Both use the Fujifilm X mount, so they fit any X Series camera with interchangeable lenses. They do not fit fixed-lens models such as the X100 series or GFX bodies.
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Which one is lighter?
The Fujinon XF23mmF2.8 R WR, by 280 g (90 g against 370 g).
Which is better, the Fujinon XF18mmF1.4 R LM WR or the Fujinon XF23mmF2.8 R WR?
On measurable specs the Fujinon XF23mmF2.8 R WR leads, 3 wins against 1. That is a spec count, not a field test.
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Built from the specifications Fujifilm publishes.