Tamron SP 150-600mm F/5-6.3 Di VC USD Lab Test Review: Digital Photography Review
Amazon.com : Tamron A011S SP 150-600mm f/5-6.3 Di VC USD Super Telephoto Zoom Lens for Sony Alpha and Maxxum Cameras - International Version (No Warranty) : Electronics
I ordered what I thought was a 1st gen tamron 150-600mm for a low price of 424 usd. turns out they sent me a G2! : r/Nikon