Notice about lens firmware update for TAMRON lens 18-400mm F/3.5-6.3 D...


Notice about lens firmware update for TAMRON lens 18-400mm F/3.5-6.3 Di II VC HLD (Model B028)

Dear users and potential purchasers of TAMRON products

Thank you for continuous use of TAMRON products.

We are pleased to inform you that the firmware update for the following lens is now available.

This is an update pertaining to our announcement on October 25th, 2022, for the issues found with autofocus activation on Canon EOS R7 / EOS R10 used with Canon Mount Adapter EF-EOS R.

Please review the information below.

Affected model

18-400mm F/3.5-6.3 Di II VC HLD (Model B028) for Canon

Firmware Version

Ver. 3


The updates improves the following issue:

Depending on the timing of camera power on/off, AF may not operate properly when the shutter release button is pressed halfway

How to Update

The lens firmware can be updated with the separately sold TAP-in Console.

If you do not have a TAP-in Console, please contact your nearest TAMRON distributor.

For a list of Tamron distributors, click here.

Lens Update Service Information


Notes on data protection

We process your personal data exclusively for the purpose of product update and for the duration of the update. Further details on data protection can be found at


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Tamron products mentioned in this article

18-400mm F/3.5-6.3 Di II VC HLD

Modelo B028

Sin espejo con adaptador Di II
Estándar, Amplia, Telefoto
Viajes, Gente, Paisaje


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