The Auto DX 8R is a ring flash with a Guide Number of 8 metres. It has one Auto mode, five manual modes and TTL mode. The maximum range in the Auto mode is 1 metre. The flash head attaches to the camera lens by a 52mm filter thread, but adapters for 49mm, 55mm and 58mm come with it.
Dedicated for Nikon F3. Comes with manual.