The initials H.N.S appear on the Vista, a Japanese Hit-type subminiature made in the late 1940s or early 1950s. They certainly correspond to a small camera maker, but their precise meaning is currently unknown.
- Sugiyama, Kōichi (杉山浩一); Naoi, Hiroaki (直井浩明); Bullock, John R. The Collector's Guide to Japanese Cameras. 国産カメラ図鑑 (Kokusan kamera zukan). Tokyo: Asahi Sonorama, 1985. ISBN 4-257-03187-5. Item 5156.