Amazon.com : Tamron 70-300mm F/4.5-6.3 Di III RXD for Sony Mirrorless Full Frame/APS-C E-Mount (Tamron 6 Year Limited USA Warranty), Black : Electronics
A067S | Tamron 50-400mm F/4.5-6.3 Di III VC VXD for SONY E - Tamron Singapore
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Amazon.com : Tamron 70-300mm F/4.5-6.3 Di III RXD for Sony Mirrorless Full Frame/APS-C E-Mount (Tamron 6 Year Limited USA Warranty), Black : Electronics
Tamron 70-300mm f4.5-6.3 Di III review | Cameralabs
Tamron 50-400mm F4.5-6.3 Di III VC vs Tamron 70-180mm F2.8 Di III VXD Detailed Lens Comparison
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Tamron 70-180mm F/2.8 Di III VXD
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Amazon.com : Tamron 100-400mm F/4.5-6.3 VC USD Telephoto Zoom Lens for Canon Digital SLR Cameras (6 Year Limited USA Warranty) Black : Electronics
Update (release date and pricing added): Tamron announces 50–400mm F4.5–6.3 Di III VC VXD lens for Sony E-mount: Digital Photography Review
Unleashing the Power: Tamron 70-200 vs. 100-400 Lens Battle - YouTube