orrie smith wrote:
The 18-140mm lens is a fine lens, but I would suggest that any future lenses be FX. That way, if you ever decide to upgrade to a full frame camera, you will not have a wasted investment in lenses. FX lenses will work fine on a DX camera, but a DX lens will not work so well on a full frame camera. A 35mm lens or a 50mm lens would be a great investment, and the 50mm fx lens is inexpensive.
Another vote for the 50mm f/1.8 GX lens. On my D7100 it's a great portrait lens @ 75mm equivalent. And it's a perfect normal lens on my film FE where it functions as an AIS lens.