From Tamron:
Product
- 28-75mm F/2.8 Di III RXD A036 for Sony
Firmware v.3 Changes
- This update improves the stability of control signal communication in continuous shooting for a long time.
Download: Tamron 28-75mm F/2.8 Di III RXD Firmware v.3
B&H carries the Tamron 28-75mm F/2.8 Di III RXD.