P7700 remote control?
Actually, the IR remote initiates the entire sequence: focusing + shutter release. Of course, if focus is not obtained for whatever reason (too dark, object too close etc.), the shutter will be released anyway.
This is why I was hoping to have a half press, if the camera don't focus (red square instead of green) I would then be able to back off and change whatever instead of taking a unfocused picture and having to delete it. Oh well. Thanks for taking the time to help.