From Tamron Japan (translated):
28-75mm F / 2.8 Di III RXD (Model A036) For customers who purchased after June 22, 2021
Target serial number
28-75mm F / 2.8 Di III RXD (Model A036) for Sony Mirrorless Cameras
9087206 – 9087237 9088710 – 9087725 9088742 – 9088005 9089551 – 9089606 9090311 – 9090312 9090314 – 9090318 9090327 – 9090363 9090365 – 9090374 9090959 – 90090974 9090991 – 9091046 9092527 – 9092582 9092607 – 9092611
Future response
Details are under investigation and will be announced on the support information page at a later date. We apologize for the inconvenience, but thank you for your patience. If you have purchased a lens with the target serial number, please contact us. We apologize for the inconvenience.
Our review: Tamron 28-75mm f/2.8 Di III RXD Lens