Physically yes, but you'll be getting images cropped to the same size sensor as your old camera. When I first tried it I didn't realize that the grid in the viewfinder of my D810 was showing me where the image was cropped... I messed up the first half of a photo shoot with clients by not realizing that! Which makes it kind of pointless to have the new body. You can use them but you're wasting some of the money spent on the full-frame body at that point. I would suggest saving up and start investing in FX lenses.