Hi Joe,Welcome to Nikonians!Yes! Both lenses will work on the D90.The D90 fully supports all Nikon F mount AF lenses with the exception of the 80mm f/2.8 and 200mm f/3.5 made for the F3AF back in 1993.The D5100 doesn't have a AF motor in the camera body and requires AF-S type lenses to support AF. Therefore neither lens will AF when mounted to the D5100.BTW:When you get a few minutes please fill in your Last Name in your User Profile. Thanks in advance.Good Luck and Enjoy your Nikons!
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