From Tamron Co. , Ltd. [translated]:
[Update information]
Tamron 20mm f/2.8 Di III OSD Lens
Tamron 24mm f/2.8 Di III OSD Lens
Tamron 24mm f/2.8 Di III OSD Lens
Firmware update notice
Thank you for your continued patronage of Tamron products. On our website dated December 23, 2021, our lenses 20mm F / 2.8 Di III OSD M1: 2 (Model F050), 24mm F / 2.8 Di III OSD M1: 2 (Model F051), 35mm F / 2.8 Di III OSD M1: 2 (Model F053) We have posted a notice that a malfunction will occur for Sony E-mount, but we are pleased to inform you that it has been improved by updating the firmware.
Target model
20mm F / 2.8 Di III OSD M1: 2 (Model F050)
24mm F / 2.8 Di III OSD M1: 2 (Model F051)
35mm F / 2.8 Di III OSD M1: 2 (Model F053)
Points to be improved
Click here for details on the phenomenon that AF switches to MF when shooting a movie in combination with the a7 IV >>> Model F050 , Model F051 , Model F053
How to update
Updates using the camera are possible. Click here for details
How to check the lens firmware version
Select "Setup" from the "Menu" of the camera and check "Version display".
Get your Tamron Lens at
B&H.