Viltrox AF 23mm F/1.4 XF

Specifications01

MountFUJIFILM X

Focal length23mm

Max aperturef/1.4

TypeCinema · Macro · Wide · Prime

Weight260 g

Filter size52 mm

Physical length72 mm

Min focus distance0.3 m

Max magnification0.1

Aperture blades9

Optical elements11

Groups10

Lens hoodpetal-shaped (bayonet mount, supplied)

Additional Info02

Category["Fujifilm"]

Keywords["Prime","Viltrox","Wide","X-mount"]

Review AuthorKlaus

Review Rating5

Other FeaturesMicro-USB connector for firmware updates

Review VerdictThe Viltrox AF 23mm f/1.4 XF may not be as good as the competing Fujinon lenses but it easily beats both of them in terms of value. At $329/349EUR, it is almost shockingly priced for such a fast lens. Therefore you may forgive that it has a couple of weak spots. At f/1.4, you have to live with reduced contrast and weak corners but the center quality is pretty good. The question may be whether you really require more than a sharp center here because, usually, you will not place your main subject in the image corners anyway. That being said - it is a limiting factor for astrophotography, for instance. If you want very sharp results across the image field, the Viltrox lens can provide this when stopping down to f/4. Lateral CAs could be a little better at f/1.4 and f/2 but you can, once again, tame them by stopping down a bit (or use CA correct in your favorite RAW converter). Image distortions are very low and that's without any digital trickery. The vignetting characteristic is typical for such a high-speed lens thus there's some visible light falloff at large-aperture settings. The bokeh has its ups and downs depending on the scene. Out-of-focus highlights are nicely rendered. The blur near the image center is very smooth but harsh contrasts in the image corners can be challenging for the lens. The mechanical quality of the Viltrox AF 23mm f/1.4 XF is surprisingly high. It's tightly assembled and most of the lens is made of metal including the lens hood. You may expect that a lens from a newcomer company struggles in terms of AF but this is not the case really. The focusing speed is very high and AF operations are noiseless - just as they should be. For your peace of mind, it's also good to know that Viltrox keeps on updating the firmware of the lens (currently at v1.0.6). So all-in-all, the Viltrox lens may not be perfect but if you can live with its limitations, you can get a lot of bang for your bucks here.

Review Criteria{"Build Quality":8,"Optical Quality":5,"Price / Performance":10}

Review Published2020-05-14T00:58:00+00:00

Optical Construction11 elements in 10 groups inc. 2xED and 2xHRI elements

Summary02

Viltrox AF 23mm F/1.4 is a Fujifilm X-mount fixed prime lens with a bright f/1.4 maximum aperture for low-light and general-purpose wide-angle use.

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Specifications from opticallimits

Where can this lens be adapted?

The Fujifilm X mount has a flange distance of 17.7 mm. A plain adapter fits a camera whose flange distance is at least 1.46 mm shorter. How lens adapters work

Native lenses set the aperture, and often the focus, electronically. On a plain adapter they do not work. Use an electronic adapter made for this pair; for many pairs nobody makes one. Fully manual lenses are the exception.