Viltrox's ultra-wide AF prime for APS-C — 20mm equiv at f/1.4 for multiple mirrorless mounts.
The Viltrox AF 13mm f/1.4 is an ultra-wide autofocus prime for APS-C mirrorless, providing approximately 20mm equivalent at the fast f/1.4 aperture. It targets astrophotographers and landscape shooters wanting speed at ultra-wide on crop-sensor cameras.
Optically good for the price — sharp from f/2.8 with the fast f/1.4 useful for astrophotography where maximum light gathering matters. Stepping motor AF. Eye-detect on compatible bodies. USB-C for firmware updates. The f/1.4 at 20mm equiv is unusual.
Available for Fujifilm X, Sony E, and Nikon Z mounts. 72mm filter thread — accepts standard filters at this ultra-wide angle. Approximately 420g. No weather sealing. APS-C coverage. Minimum focus distance approximately 20cm.
Available used at mid-range prices. The fast f/1.4 at ultra-wide on APS-C is unusual — useful for astro on crop sensors. The 72mm filter thread is practical for ND and polariser use. Check for firmware updates and AF accuracy.