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Fujinon XF90mmF2 R LM WR vs Viltrox AF 56mm F1.7 Air XF
Short answer
The Fujinon XF90mmF2 R LM WR (90mm) and Viltrox AF 56mm F1.7 Air XF (56mm) are both portrait lenses for the Fujifilm X mount. The Viltrox AF 56mm F1.7 Air XF is the faster lens at f/1.7 against f/2 on the Fujinon XF90mmF2 R LM WR. Only the Fujinon XF90mmF2 R LM WR has weather sealing and an aperture ring.
Viltrox AF 56mm F1.7 Air XF: 5 specs ahead
Side by side
| Fujinon XF90mmF2 R LM WR | Viltrox AF 56mm F1.7 Air XF | |
|---|---|---|
| Brand | Fujifilm | Viltrox |
| Focal length | 90mm | 56mm |
| 35mm equivalent | 135mm | 84mm |
| Maximum aperture | f/2 | f/1.7 |
| Mount | Fujifilm X | Fujifilm X |
| Autofocus | Yes | Yes |
| Optical stabilisation | No | — |
| Weather resistant | Yes | — |
| Aperture ring | Yes | — |
| Macro | No | — |
| Linear motor | Yes | — |
| Minimum aperture | f/16 | — |
| Aperture blades | 7 | 9 |
| Lens construction | 11 elements in 8 groups | — |
| Special elements | 3 extra low dispersion elements | — |
| Angle of view | 17.9° | — |
| Minimum focus | 0.6 m | 0.55 m |
| Maximum magnification | 0.2× | — |
| Weight | 540 g | 171 g |
| Diameter | ⌀75 mm | ⌀65 mm |
| Length | 105 mm | 54.7 mm |
| Filter thread | ⌀62 mm | ⌀52 mm |
| Launch price | — | $180 |
Where each one is ahead
Reasons to choose the Fujinon XF90mmF2 R LM WR
- Longer reach 135 mm vs 84 mm
Reasons to choose the Viltrox AF 56mm F1.7 Air XF
- Wider view 84 mm vs 135 mm
- Maximum aperture f/1.7 vs f/2
- Minimum focus 0.55 m vs 0.6 m
- Weight 171 g vs 540 g
- Diameter ⌀65 mm vs ⌀75 mm
- Length 54.7 mm vs 105 mm
Framing and reach
| Lens | Frames like | Horizontal view | Frame width at 10 m |
|---|---|---|---|
| Fujinon XF90mmF2 R LM WR | 135 mm | 14.9° | 2.6 m |
| Viltrox AF 56mm F1.7 Air XF | 84 mm | 23.7° | 4.2 m |
The Fujinon XF90mmF2 R LM WR gets 1.61× closer to the subject than the Viltrox AF 56mm F1.7 Air XF: whatever it points at fills 1.61× more of the frame edge to edge, or 2.6× more of its area. With the Viltrox AF 56mm F1.7 Air XF you would have to walk about 38% of the distance towards the subject to get the same picture — or crop it later, which leaves roughly 39% 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 Viltrox AF 56mm F1.7 Air XF is 369 g lighter than the Fujinon XF90mmF2 R LM WR, about 68% less.
- The Fujinon XF90mmF2 R LM WR is 50.3 mm longer.
- The Fujinon XF90mmF2 R LM WR is 10 mm wider.
- The Fujinon XF90mmF2 R LM WR takes ⌀62 mm filters and the Viltrox AF 56mm F1.7 Air XF ⌀52 mm, so filters are not shared.
What each one suits
| Fujinon XF90mmF2 R LM WR | Viltrox AF 56mm F1.7 Air XF | |
|---|---|---|
| Birds and wildlife | Poor | Poor |
| Sports | Average | Poor |
| Portrait | Excellent | Excellent |
| Travel | Poor | Fair |
| Street | Poor | Poor |
| Weddings | Excellent | Very good |
| Walk around | Poor | Good |
| Vlogging | Poor | Poor |
| Landscape | Poor | Poor |
| 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 XF90mmF2 R LM WR if
- your subject is far away. It magnifies 1.61× more, and walking closer is not always an option.
Choose the Viltrox AF 56mm F1.7 Air XF if
- weight matters to you. It is 369 g lighter, roughly 68% 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 XF90mmF2 R LM WR or the Viltrox AF 56mm F1.7 Air XF?
The Viltrox AF 56mm F1.7 Air XF, by 369 g — about 68% less.
Which is better in low light, the Fujinon XF90mmF2 R LM WR or the Viltrox AF 56mm F1.7 Air XF?
The Viltrox AF 56mm F1.7 Air XF. At f/1.7 against f/2 it gathers 0.5 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 XF90mmF2 R LM WR and Viltrox AF 56mm F1.7 Air XF use the same filters?
No. The Fujinon XF90mmF2 R LM WR takes ⌀62 mm and the Viltrox AF 56mm F1.7 Air XF ⌀52 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.
compare.faqTitle
Which one is lighter?
The Viltrox AF 56mm F1.7 Air XF, by 369 g (171 g against 540 g).
Which is better, the Fujinon XF90mmF2 R LM WR or the Viltrox AF 56mm F1.7 Air XF?
On measurable specs the Viltrox AF 56mm F1.7 Air XF leads, 5 wins against 0. That is a spec count, not a field test.
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Built from the specifications Fujifilm publishes.