Canon EF600mm f/4L IS III USM Instructions Manual

Also see for EF600mm f/4L IS II USM: Instructions Instructions Instructions Instructions

Contents

ENG-83. Setting the Focus ModeTo shoot in autofocus (AF) mode, set the focusmode switch to AF.To use only manual focusing (MF), set the focusmode switch to MF, and focus by turning thefocusing ring.See p. 14 for information on power focus (PF).OO The lens’ focusing ring is electronic.OO When AF operation is set to [ONE SHOT],manual focus is possible after autofocusinghas been completed by continuing to press theshutter button halfway (Full-time manual focus).There are times when camera setting changesare required.OO When the AF button assignment is changed fromthe “shutter button” (using the camera’s CustomFunction), manual focus is always possibleregardless if the shutter button is pressedhalfway any time the lens is not autofocusing.Focusing ringFocus mode switchOO Quickly turning the focusing ring may result indelayed focus.