The Tamron 70-180mm f/2.8 Di III VXD has been pretty well-reviewed so far and that is not changing with Manny Ortiz. He decided to compare the Tamron 70-180mm f/2.8 Di III VXD vs Sony 70-200mm 2.8 GM and below are some of his test results.
Tracking Performance of 19 Photos
Tamron 70-180mm f/2.8 Di III VXD
100% hit rate
Sony 70-200mm 2.8 GM
70% hit rate
Image Quality
Tamron 70-180mm f/2.8 Di III VXD
Sharp and accurate
Sony 70-200mm 2.8 GM
Maybe a tad sharper when in focus, but back focuses a lot
Focus Speed
Tamron 70-180mm f/2.8 Di III VXD
Comparable with plenty of light and low
Sony 70-200mm 2.8 GM
Comparable with plenty of light and low
Weight
Tamron 70-180mm f/2.8 Di III VXD
Light
Sony 70-200mm 2.8 GM
Heavy
Conclusion
Tamron 70-180mm f/2.8 Di III VXD
Great performance for the price and would recommend because you won’t miss the 3rd party. You can buy all 3 Tamron lenses for the price of one Sony lens
Sony 70-200mm 2.8 GM
Very expensive and not worth the money compared to the Tamron
Epilog
Tamron makes Sony a much more attractive system due to its trilogy of lenses. You can get a full high-end professional setup for a very reasonable price.
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Tamron 17-28mm f/2.8 Di III RXD FE: B&H Photo / Amazon / Adorama
Tamron 28-75mm f/2.8 Di III RXD FE: B&H Photo / Amazon / Adorama
Tamron 70-180mm f/2.8 Di III RXD FE: (Coming Soon): B&H Photo / Amazon / Adorama