The Tamron 70-300mm F4.5-6.3 Di III RXD isn't a bad lens at all. But it's also not one of the company's best lenses either.
Bargain Bird Photography. Tamron 70-300mm F4.5-6.3 Di III RXD Review
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New images of the Tamron 70-300mm f/4.5-6.3 lens (preorders will open soon) – sonyalpharumors
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Bargain Bird Photography. Tamron 70-300mm F4.5-6.3 Di III RXD Review
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