Viltrox 13mm f/1.4: B&H Photo / Amazon The Viltrox 13mm f/1.4 hasn’t started shipping in the United States yet, but Viltrox has already released its first firmware update v.1.0.1. The details are below: Firmware update v1.0.1 1. Fix the problem that the focus fails in some cases 2. Optimize focus stability AF 13/1.4 XF V1.0.1  Firmware Download … Continue reading Viltrox 13mm f/1.4 Firmware 1.0.1 Released