Dear Tamron product users and potential purchasers. Thank you for your interest in Tamron products. We would like to announce that we found an issue with our 17-28mm F/2.8 Di III RXD (Model A046) for SONY mirrorless cameras. [Symptom] When you use flashes, there is a delay from the time the shutter button is pressed to the time the shutter and the flash release. Applicable camera models: α7, α7Ⅱ, α7R, α7RⅡ, α7S, α7SⅡ, α5000, α5100, α6000, α6300, α6500, NEX-3N, NEX-5R, NEX-5T, NEX-7, NEX-F3, NEX-6 We are currently working on the cause of the error and for the solution to this matter. We expect this issue to be resolved very shortly and we will release a firmware update at that time. Regarding the firmware updating process, please be assured that the process is accomplished directly through the SONY camera and supported by the Sony firmware updating function. As soon as the process is finalized, we will explain the process in detail on our website. We sincerely apologize to all users and potential purchasers for any inconvenience this issue may cause.