Not only does it provide an easier push on the trigger, so
to speak, it also raises the shutter release up to the level of the shutter speed
dial on the Photomic finders. For Nikon F, F2, and Nikkormats.
AR-2 Cable Release
This is a fairly standard cable release which has a locking
feature -- when you turn the milled ring around the release, it will hold the plunger
in place. For Nikon F and F2.
AR-4 Double Cable Release
This release is designed for use on bellows with the BR-4
ring, and provides a semiautomatic diaphragm. Normally, the diaphragm is held open
by the BR-4, but when its plunger is depressed, the diaphragm will stop down to the
selected aperture. For Nikon F and F2.
AR-8 Cable Converter
This converts the tip of F/F2-style releases to fit into standard
male-threaded release sockets.