From Tamron:
Model: A046
Product: 17-28mm F/2.8 Di III RXD
Mount: Sony
Latest Version: Ver.2
This update improves the following issues which may rarely occur with certain settings.
- The back monitor of camera instantly flashes when the shutter button is pressed halfway.
- AF doesn’t work properly after the camera recovers from the sleep mode or power off.
Download: Tamron 17-28mm F/2.8 Di III RXD Firrmware Ver.2