Nikon K Ring Set  type_Digital Camera there was this Nippon Kogaku

there was this Nippon Kogaku 8

But it's also a true manual focus rangefinder with aperture-priority autoexposure

The 40mm focal length makes it a versatile all-purpose prime

and compatibility with Minolta MD-mount lenses

Individually-adjustable pan and ball controls

Nikon K Ring Set &nbsptype_Digital Camera there was this Nippon KogakuThe Nikon K ring set is a stack of tubes and adapters that gives you the opportunity for all sorts of F mount shenanigans. The set includes the K1, which is a short F to F extension tube; the K2, with a lens side F mount and an inner 52mm thread; the K3, with a 52mm outer thread on one end and a camera side F mount on the other; and two 52mm threaded extension tubes. In its simplest form, it's an adjustable extension tube, but there are enough odd