Canon eos 350d digital rebel xt User Manual

f Selecting the AF ModeN

Pressing the shutter button
halfway activates the autofocus
and achieves focus once.

The dot < . > inside the AF point
achieving focus ﬂashes brieﬂy in red.
Also, the focus conﬁrmation light
<

o> in the viewﬁnder lights.

With evaluative metering, the exposure setting
(shutter speed and aperture) will also be set
when focus is achieved. The exposure setting
and focus will be locked as long as the shutter
button is pressed halfway. (p.75) You can then
recompose the shot while retaining the
exposure setting and point of focus.

While you press the shutter
button halfway, the camera
focuses continuously.

This AF mode is for moving subjects when
the focusing distance keeps changing.

With predictive AF*, the camera can also
focus track a subject which steadily
approaches or retreats from the camera.

The exposure is set at the moment
the picture is taken.

One-Shot AF for Still Subjects

AF point

Focus

conﬁrmation

light

AI Servo AF for Moving Subjects

If focus cannot be achieved, the focus conﬁrmation light <

o> in the viewﬁnder will blink. If this

occurs, a picture cannot be taken even if the shutter button is pressed fully. Recompose the
picture and try and focus again. Or see “When Autofocus Fails (Manual Focusing)” (p.76).

In a Creative Zone mode (except <

8>), the beeper will not sound even when

focus is achieved. Also, the focus conﬁrmation light <

o> in the viewﬁnder will not light.