This was the size reduced later version (AE versus EE) of the kit lens for the Konica AR series of 35mm film cameras.

This lens has six elements and a six blade aperture with a range from 1.7 to 16 with no half stop detents.

The minimum focus distance is .55m or 1.75' and it has an effective angle of view of 24 degrees when mounted on an M4/3 camera.

It's threaded for 55mm filters.

It does a very nice job taking clear high resolution pictures and there's only a slight bit of ghosting when wide open. It's a good all around lens with decent bokeh.