Tokina's AF 20mm f/2 for Sony FE — same as ID 979, possible duplicate listing.
The Tokina FiRIN 20mm f/2 AF FE is Tokina's autofocus 20mm wide-angle prime designed natively for Sony full-frame E-mount. The FiRIN line represented Tokina's entry into the Sony mirrorless AF market — providing f/2 at 20mm with full electronic communication.
Optically good — sharp from f/4 with acceptable performance at f/2. The fast f/2 aperture at 20mm is useful for astrophotography and low-light wide-angle work. Stepping motor AF provides quiet focusing. De-clickable aperture ring enables smooth video iris pulls.
Sony FE mount with 62mm filter thread and full electronic contacts for AF, aperture control, and EXIF data recording. Approximately 490g with no weather sealing. Minimum focus distance 28cm. De-clickable aperture ring. Metal construction throughout the barrel.
Available used at mid-range prices — the FiRIN line had limited market impact against Sony and Sigma alternatives. The Sony FE 20mm f/1.8 G is sharper and weather-sealed for slightly more. For budget Sony FE users wanting a fast manual-character wide prime with AF.