Tamron 150-500mm f/5-6.7 Di III VC VXD: B&H Photo / Amazon / Adorama Tamron released a new firmware update for the Tamron 150-500mm F/5-6.7 Di III VC VXD that improves multiple aspects of the lens, available for download here. 1. Improved AF performance during zooming 2. With α9 III, when its focus mode is set to AF-S, DMF, or MF, … Continue reading Tamron 150-500mm F/5-6.7 Di III VC VXD Firmware 4 Released