Nikon F-- Error Mystery Solved
I recently discovered what's causing that infamous "F--" error. It happened when I grabbed the camera by the lens. The lens actually turned a bit and "F--" popped up immediately. That's when it became apparent to me that I could actually jiggle the lens by a milimeter to one side or the other thus causing an interruption in the lens contact with the body. This in turn causes the "F--" error.
So, don't grab your camera by the lens and if you do get the error, try to realign the lens so that it goes back to normal.
So, don't grab your camera by the lens and if you do get the error, try to realign the lens so that it goes back to normal.