Viltrox released firmware updates for the Viltrox AF 50mm f/1.8, 35mm f/1.8, and 24mm f/1.8 that optimize compatibility with the a7IV.
AF 50/1.8 FE V1.0.6 Firmware Download
Firmware update instructions:
1. Optimize compatibility with a7m4.
2. Optimize the stability of video focusing for long-time work.
AF 35/1.8 FE V1.0.5 Firmware Download
Firmware update instructions:
1. Optimize compatibility with a7m4.
2. Optimize the stability of video focusing for long-time work.
AF 24/1.8 FE V1.0.5 Firmware Download
Firmware update instructions:
1. Optimize compatibility with a7m4.
2. Optimize the stability of video focusing for long-time work.
Viltrox 50mm f/1.8: B&H Photo / Amazon
Viltrox 35mm f/1.8: B&H Photo / Amazon
Viltrox 24mm f/1.8: B&H Photo / Amazon
VILTROX 85mm f/1.8 II: B&H Photo / Amazon
VILTROX 56mm f/1.4: B&H Photo / Amazon
VILTROX 33mm f/1.4: B&H Photo / Amazon
VILTROX 23mm f/1.4: B&H Photo / Amazon