One of the reasons that stood out when I bought the 7200 was the fact it could take lens from the 70's since I am from the film side of things manual focusing doesn't bother me, that's all I know when it comes too SLR camera. Let me ask you something, when buying older lenses are there really good ones out there I should keep an eye out for?
Interestingly, unless I've been misinformed, non-AI lenses (those made before about 1978) cannot safely be used on the D7200; that there's a genuine risk of damaging a D7200 if you try, unless they've had the AI modification done to them.
Nikon claims that the DF is the only DSLR that can use non-AI lenses, but my D3200, my three old non-AI lenses, and I
disagree with Nikon on this matter.
The issue has to do with a change in 1978 to the method of coupling the lens' aperture ring to the camera's meter. Before then, this one done using the shoe that is prominently-visible on nearly all older Nikon lenses, and a pin on the camera that engages that shoe. The newer Aperture Indexing (AI) method, involved a tab on the camera that engages a notch cut into the aperture ring. Non-AI lenses don't have this notch cut into the ring, to fit that tab, and there's a risk of damaging that tab if you try to mount a non-AI lens on an AI camera.
The D7x00 and higher models all have an AI tab, so that they can couple with older non-electronic AI lenses. So you have metering with these lenses, and even automatic exposure control, but you cannot safely use non-AI lenses.
The D3x00 and D5x00 models do not have an AI tab. This means that they cannot do exposure metering or automatic exposure with anything but fully-electronic lenses. But it also means, contrary to what Nikon claims, that you can safely mount and use old non-AI lenses, which work with exactly the same expected limitations as non-CPU AI lenses; you can only use them in M mode, and have to control everything manually.