:There is no cover for the mechanical cable release :socket on the F4. : :don ferrario :http://www.ferrario.com/don My F4s has a cover for the mech. release, so I know they make them, and should have them. These little guys are easy to misplace! I keep a small plastic ziploc bag in my camera bag to put these little covers in when I remove them. It's easier than trying to find them in a compartment, or the bottom of your camera bag. ;)
