March 28, 2022
Tamron Co., Ltd.

Press Release

[Update]Notice about Firmware Update for
Tamron 20mm Di III OSD M1:2 (Model F050)
Tamron 24mm Di III OSD M1:2 (Model F051)
Tamron 35mm Di III OSD M1:2 (Model F053)

Dear users and potential purchasers of Tamron products.

Thank you for using Tamron products.

We are pleased to inform you that the firmware update for the 20mm Di III OSD M1:2 (Model F050), 24mm Di III OSD M1:2 (Model F051),35mm Di III OSD M1:2 (Model F053) for Sony E-mount, full-frame mirrorless cameras, is now available.

This is an update regarding our announcement on December 23,2021, we have confirmed that the Model F050,F051,F053 for Sony mirrorless cameras do not work properly.

The firmware update is available through Sony E-mount camera bodies. Please review the information below.

Affected 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)

Firmware version



This update improves the following issues: The focus mode may switch from AF to MF during video recording with the SONY α7IV.

Tap for more details.

Model F050, Model F051, Model F053

How to Update

The lens firmware can be updated using cameras that support this lens firmware update. Tap for more details.

How to Check your Lens Firmware Version

From your camera’s menu screen, please select "Setup" then "Display version." Tap for more details

Inquiries regarding this matter

Please contact your local Tamron distributor.