Viltrox AF lens · announced April 21, 2020
Viltrox AF 33mm f/1.4 XF review
33 mm · f/1.4 · 270 g · 10 elements in 9 groups
Verdict
The lens that made third-party autofocus credible on X mount. An f/1.4 50 mm-equivalent prime with an ED element, stepping-motor AF and real EXIF for around a third of what Fujifilm charges at the focal length.
Anyone who wants a fast autofocusing normal prime without paying Fujifilm prices, and who shoots single-shot rather than tracking.
In detail
The Viltrox AF 33mm f/1.4 XF is the lens that made third-party autofocus glass a serious option on Fujifilm X mount. It shipped in April 2020 at around 239 dollars — roughly a third of what Fujifilm's own XF 33mm F1.4 R LM WR costs — and it focuses, meters, and writes EXIF like a native lens.
The optical design is ten elements in nine groups with one extra-low dispersion element and one high-refractive-index element, a nine-blade diaphragm, and Viltrox's HD Nano multi-layer coating. It is 72 mm long, 65 mm across, 270g, and takes 52 mm filters. Minimum focus is 0.40 m for a 0.1x ratio, and the 50 mm-equivalent field of view is the classic normal view.
Autofocus is driven by a stepping motor, which puts it a tier above the DC motors in Fujifilm's own 2012-era primes for speed and well ahead of them for noise. It is not a linear-motor lens and does not track like one, but for single-shot work on static and slow-moving subjects it is quick and quiet.
Two details separate it from a native lens. The aperture ring is clickless and unmarked — smooth for video, imprecise for stills. And there is a USB port in the lens mount for firmware updates, which is how the lens gained compatibility with bodies that did not exist when it launched. Viltrox shipped a revised V2 specifically to add X-Pro3 support, which tells you how that compatibility story has gone.
Pros and cons
What we like
- f/1.4 autofocus normal prime at roughly a third of the native price.
- Strong centre sharpness from f/1.4, even across the frame by f/2.8.
- Fast, effectively silent stepping-motor autofocus — quiet enough for video.
- User-updatable firmware over a USB port in the mount.
- HD Nano coating handles backlight without the milky wash cheap glass shows.
The value is not close. An f/1.4 autofocus normal prime with an ED element, a nine-blade diaphragm, a metal barrel, and a stepping motor at 239 dollars undercuts everything Fujifilm makes at the focal length by a large multiple, and it does not feel like a compromise in the hand.
Optically it is strong from f/1.4 in the centre and evens out across the frame by f/2.8. Contrast wide open is better than the price band predicts, the HD Nano coating handles backlight without the milky wash cheap lenses show, and the nine-blade diaphragm keeps highlights tidy stopped down.
Autofocus is fast and effectively silent. On an X-T3 and X-E4 it locks without the hunting-and-clunking the XF 35mm F1.4 R does in the same light, and it is quiet enough for video with in-camera audio. Firmware is user-updatable over USB, which has kept the lens alive across body generations.
Trade-offs
- Clickless, unmarked aperture ring — smooth for video, imprecise for stills.
- No weather sealing and no stabilization.
- 270g and 72 mm long, noticeably bigger than the XF 35mm F1.4 R.
- Compatibility depends on firmware; the original needed a hardware revision for the X-Pro3.
- Viltrox's own store no longer lists the X-mount version, so future support is uncertain.
The clickless, unmarked aperture ring is the daily annoyance. It rotates smoothly with no detents and no engraved numbers, so you set aperture by watching the display and it is easy to nudge in a bag. Video shooters like it; anyone who buys Fujifilm partly for the tactile controls will not.
There is no weather sealing and no stabilization, and at 270g and 72 mm long it is bigger than the focal length suggests — noticeably longer than the 187g XF 35mm F1.4 R for a similar field of view.
Compatibility depends on firmware, and that is a real ongoing cost rather than a footnote. The original version needed a hardware revision to work with the X-Pro3, and Viltrox's X-mount lineup has been unstable enough that its own store no longer lists this lens for Fujifilm. Buying one means accepting that support for future bodies is a hope, not a promise. Autofocus is also stepping-motor rather than linear, so continuous tracking on fast subjects is not where it competes.
Who is this for
The Viltrox AF 33mm f/1.4 XF is for anyone who wants a fast autofocusing normal prime and does not want to spend Fujifilm money on it. As a first fast prime, or as the lens that lives on a second body, the price-to-capability ratio is the best in the mount.
It suits available-light shooting, portraits at conversational distance, and general documentary work where autofocus matters more than the last increment of rendering. It also suits video, where the silent stepping motor and the clickless aperture ring both work in your favour.
Look at the XF 35mm F1.4 R instead if the rendering matters more than the autofocus, or at the XF 35mm F2 R WR if you need sealing and the smallest possible barrel. Consider Fujifilm's own XF 33mm F1.4 R LM WR if you need linear-motor tracking and a guarantee that the lens will work with whatever body you buy next.
Photos shot on the Viltrox AF 33mm f/1.4
We shot and published 3 frames on the Viltrox AF 33mm f/1.4, January 2022 to March 2022. Click any thumbnail for the full-size file and its settings on masnun.photos. Every frame is edited, so read them as a record of how the lens renders in use rather than as a resolution test.
Full specifications
| Focal length | 33 mm |
|---|---|
| 35mm equivalent | 50 mm |
| Maximum aperture | f/1.4 |
| Minimum aperture | f/16 |
| Optical construction | 10 elements in 9 groups |
| Special elements | 1 ED element, 1 high-refractive-index element, HD Nano coating |
| Min. focus distance | 0.40 m |
| Max. magnification | 0.1× |
| Aperture blades | 9 |
| Filter thread | 52 mm |
| Diameter × length | 65 × 72 mm |
| Weight | 270g |
| Weather sealing | No |
| Min. operating temp | — |
| Focus drive | Stepping motor |
| Optical stabilization | No |
| Announced | April 21, 2020 |
Rating breakdown
| Dimension | Score |
|---|---|
| Image quality | 8 / 10 |
| Autofocus | 7 / 10 |
| Handling | 6 / 10 |
| Value | 10 / 10 |
Where to buy
The link below runs an Amazon search for this lens rather than pointing at one listing, because stock and sellers move around. As an Amazon Associate we earn from qualifying purchases — at no extra cost to you.
Viltrox AF 33mm f/1.4Amazon · search resultsCompare head-to-head
Sources and further reading
Specs come from the manufacturer. Measured optical behaviour and owner reports are attributed to the people who did the work:
Still choosing?
If you are weighing this against the other small primes, the lens picker ranks them against how you actually shoot. If the body is still open too, start with the camera quiz.