I think that too, because for full press you have to go past half press too. That page 231 is saying that if AF-S and/or AF-C are set to OFF then the whole AF system will not be engaged by the shutter button at all, you need to assign another button to activate the AF system like for example the back-button for the Back Button Focus (BBF) friends. I think that is not what you are searching for cheddar-C , what you want is a re-focus between each bursted pic. Presuming the page 231 settings are both set to ON: In AF-S it does not re-focus between CL shots, it keeps focus firm to the very first time you pressed, I just checked that out. While in AF-C it does re-focus between CL shots.