Nikon K Ring Set finger grip In working order

In working order

8 Fish-Eye is a manual focus "full frame" fisheye lens for Micro Four Thirds

5 Novar Anastigmat

takes up almost no room

Nikon K Ring Set finger grip In working orderThe 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