Canon EOS-1DS Mark III Instruction Manual

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Canon EOS-1DS Mark III Instruction Manual Manual pdf 83 page image

AF: Selecting the AF Mode_,, If focus cannot be achievea, the focus confirmation light <0> in thewe _¢finder will biink. If this occurs, a picture cannot be taken even if theshutter button is pressed completeJy. Recompose [ne picture and try ariafocus again. Or see "When Autofocus Fails" (p.86)._fthe [CJ: Beep] menu is set to [Off], the beeperwtJlno[ soueawhen focus is achieved.Focus LockAfter achieving focus with One-Shot AF, you can Jock the focus on a suojecland recompose [ne sno[. This is called "focus lock." This is convenient whenrou want to focus a subject not covered by the Area ARAJ Ser¢o AF for Moving SubjectsThis AF mode is for moving subjectswhen the focusing distance keepschanging. While you hoJd down theshutter button halfway, the subjectwiJJ be focused continuousJy.® The exposure is set at the momentthe picture is taken.® AF is also possible by pressing the button.Focus Tracking with At Servo AFIf the subject approaches or retreats from the camera at a constant rate, thecamera tracks the subiect and predicts the focusing distance immediately beforethe picture is taken. This is for obtaining correct focus at the moment of exposure.® When the AF point selection is automatic (p.84), the camera firstuses the center AF point to focus. During autofocusing, if the subjectmoves away from the center AF point, focus tracking continues aslong as the subject is covered by the Area AR® With a manually selected AF point, the selected AF point will focustrack the subject.With AI SeEvoRE,the beeperwi!!not Soundeven when focus is ach!eved.A!sa,the focus confirmationlight inthe viewfinderwi!Jnot !ight,83