Bokkeh is based in Taiwan, and they’ve come out with an inexpensive line of primes with full frame coverage, their Bokkelux (get it?). I had a hard time getting a straight answer out of Vincent about whether or not they were manufacturing their own glass. I think he said that like other lens manufacturers, they gather parts from all over, and that the glass came from Japan. Take from that what you will. Certainly worth further investigation if you are in the market for full frame glass with an inexpensive buy in.