I had read so much about the flimsiness of the Nikon's RT-1 tripod mount for this lens, which they charged so much for, that I ordered instead a "DSLRKIT" for the lens from Amazon for the princely sum of $25.99. It took a while to get here from China, and it weighs 4.5 oz or more, but its solid as a rock and I'm happy as a clam with it.
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