17mm Tomioka Tominon on Maxxum 7D
This lens is optimized for photography in the 20-30X range.
It is mounted on a short tube and has the front element close forward.
On an APS camera this means a field of view of about 2X3mm and a working distance less than 10mm.
Shown mounted on the Vivitar modular bellows with a T mount adapter.