Hi - am planning to get this lens (AF-S DX Micro NIKKOR 85mm f/3.5G ED VR) - but is it readily compatible with Nikon D50 digital SLR (w/out any ring or extra attachment)?

Thanks in advance!

I am using this lens with a D5100 in both manual and autofocus modes. In autofocus mode at moderate macro distances (min. to ca. 24") the autofocus will sometimes lose focus and have difficulty acquiring focus even if I point to a mid-distance high contrast subject to help it recover. Also, if I attempt to manually acquire focus either in the M or A position on the lens the focus ring will turn without positively moving the lens elements. With enough turning I have so far been able to get the elements to move. I assume there is a clutch type mechanism to permit manual focus with the lens in A mode, is it possible that this clutch has failed or is failing? The lens is only a few months old. Despite acceptable optics, the mechanical aspects of this lens are disappointing for a Nikon product.