Tokina's AF wide prime for Sony FE — 20mm f/2 with full-frame coverage and electronic contacts.
The Tokina FíRIN 20mm f/2 AF is a full-frame wide prime designed for Sony FE mount with autofocus — Tokina's entry into the Sony mirrorless AF lens market. It provides 20mm at f/2 with electronic communication for AF, aperture, and EXIF data.
Optically good — sharp from f/4 with acceptable performance at f/2. The fast f/2 aperture makes it useful for astrophotography and low-light wide-angle work. Stepping motor AF is quiet. De-clickable aperture ring for smooth video use.
Sony FE mount with 62mm filter thread. Approximately 490g. No weather sealing. Minimum focus distance 28cm. De-clickable aperture ring. Electronic contacts for full camera communication. Metal construction.
Available used at mid-range prices. The Sony FE 20mm f/1.8 G is sharper and weather-sealed. Tokina's FíRIN line had limited market impact on Sony FE. For photographers wanting a 20mm f/2 at a lower price than the Sony G option.