Anyone considering buying a Nikon D300 should be aware that many people have had trouble with the camera body and AF "D" lenses. One of my D300 camera bodies won't AF or change apertures, though it works perfectly fine with DX lenses.
My 50mm and 85mm, both AF lenses but with aperture rings, work fine on other D300's, but not my "broken one. Two different camera shops have confirmed that my "D" lenses work fine and the D300 camera body does not! I did several searches on Goggle and found out that many others are having this problem.
When and if you buy a D300 camera body, put a "D" lens on the camera and make sure it will AF and change apertures (you need to set the aperture to F22, BTW). Don't do like I have and not do this until after the 30 day return policy from Amazon- they told me I'm on my own.
In all fairness, the Amazon help department did e-mail me with a contact e-mail at Nikon- that didn't work. I wrote back to Amazon to ask for the correct e-mail address and the return address Amazon used won't accept return e-mails. Oh, did I mention that I had to write Amazon twice, after waiting a week for a response from them.
Just thought I'd give a "heads up" on my experience with Nikon and Amazon.
Buyer beware.......
shep