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Tamron 200-500 F5-6.3 DI AF Lens Nikon Questions & Answers
Using 200-500 Tamron on Nikon
Maybe there is something wrong with your batteries? Replace them. I had the same experience with my D200 and a Nikon 18-200 lens, later with my Nikon 10.5, Sigmaa 135-400. After replacing the battery everything worked as ever.
I sent my canon 40D
This is a bit off the wall, I know, but have you contemplated taking the drastic step of getting the lens mended ?
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