a shake level determination step of determining a shake level of an image capturing apparatus based on {HEAD ~ an output} of {TAIL ~ said shake detection step} 
of
a shake level determination step of determining a shake level of an image capturing apparatus based on { HEAD ~ an output } of { TAIL ~ said shake detection step }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL