Most of Nikon products are not made in Japan. Labor costs in Japan would make most Nikon equipment unaffordable and the labor force in other contraries are just as skilled as the Japanese and cost less.
This is a result of globalization. Most cars are built with parts from all over the world. Even Boeing is acquiring parts from all over the world for their planes and only assembling them Washington. Most of the parts for the original IBM PC were off-shored and IBM only put a sticker on the system. Does that make the items any better or worse?