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Mine fits solid to the z7 body without any issues described by some other customers, however, I was looking forward to using this on my go to SP 24-70mm F/2.8 Di VC USD G2 that I just purchased for my d500. The Tamron SP 24-70mm F/2.8 Di VC USD G2 is a great piece of glass, however, without firmware updates, you just get errors. I’m not ready to shell out over 2k for the new z equivalent lens. Anyhow, if your planning on mounting any third party lenses, dont get your hopes up. I’ll probably eventually get a nice z series walk around, but not yet. The adapter is ok, but, as many have stated, not worth the retail price, considering what it does.