All of Nikon s lenses are F mount, the lenses you already have will work with the D7200. The D7200 will give you an advantage over your 3200 because it has a focusing motor in the body and can use the older auto focus lens that your 3200 could not.You can definitely find some good older pro lens that will not break the bank like the new ones. You can of course use all of Nikon s newer lenses as well.