Canon Eos Rebel Xt 350d Instruction Manual

71
f Selecting the AF Mode N
Pressing the shutter button 
halfway activates the autofocus 
and achieves focus once.
sThe dot <  .
 > inside the AF point 
achieving focus flashes briefly in red. 
Also, the focus confirmation light 
< o > in the viewfinder lights.
s
With evaluative metering, the exposure setting 
(shutter speed and aper ture) 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...

f Selecting the AF Mode N
72 * About Predictive AF
If the subject approaches or retreats from the camera at a constant rate, 
the camera tracks the subject and predicts the focusing distance 
immediately before the picture is taken. This is for obtaining correct 
focus at the moment of exposure.
¡When the AF point selection is automatic, the camera first uses the 
center AF point to focus. During autofocusing, if the subject moves 
away from the center AF point, focus tracking continues as long as 
the...

73
The AF point is used for focusing. The AF point can be selected 
automatically by the camera or manually by you.
In Basic Zone modes and the <
88 8
8> mode, the AF point is selected 
automatically. In the < d> < s >   modes, you can switch 
between automatic and manual AF point selection.
The camera selects the AF point automatically to suit the shooting 
conditions.  All the AF points <  .
 > in the viewfinder will light in red.
You can select any of the seven AF points manually.  This is best 
when...

S Selecting the AF Point N
74
•Automatic AF point selection
• Manual AF point selection
Under low-light conditions, when you press the shutter button halfway, 
the built-in flash fires a brief burst of flashes. It illuminates the subject to 
enable easier autofocusing.
All of the AF points <  .
 > will light in red.
¡ Selecting an AF point beyond a peripheral AF 
point will set the automatic selection mode.
Select the desired AF point so the <  .
 > 
lights in red.
Selecting with the Dial
¡ Press the < S>...

75
After achieving focus, you can lock the focus on a subject and 
recompose the shot. This is called “focus lock.” Focus lock works only in 
the One-Shot AF mode.
1Set the Mode Dial to a Creative 
Zone mode.
2Select the desired AF point. (p.73)
3Focus the subject.
¡Move the AF point over the subject 
and press the shutter button halfway.
4Keep pressing the shutter button 
halfway and recompose the 
picture as desired.
5Take the picture.
Using Focus Lock
If the AF mode is AI Servo AF (or AI Focus AF set...

76
Autofocus can fail to achieve focus (the focus confirmation light 
blinks) with certain subjects such as the following:
Subjects Difficult to Focus
(a) Low-contrast subjects  Example: Blue sky, solid-color walls, etc.
(b) Subjects in low light
(c) Extremely backlit and reflective subjects  Example: Car with a reflective body, etc.
(d) Overlapping near and far objects  Example: Animal in a cage, etc.
(e) Repetitive patterns Example: Skyscraper windows, computer keyboards, etc.
In such cases, do one of the...

77
The camera has three metering modes: Evaluative, partial, and center-weighted average metering. In the Basic Zone modes, evaluative metering will be set automatically.
1Press the  button.
sThe [ Metering mode ] menu will appear.
2Select the metering mode.
¡Press the < V> key to select the 
desired setting, then press < 0>.
q : Evaluative Metering
w : Partial Metering
e :
Center-weighted Averaged Metering
¡ When you press the shutter button 
halfway, the selected metering mode 
will be displayed on...

78
Single and cont inuous dr ive modes are prov ided . In the Bas ic Zone modes, the opt imum dr ive mode  is set automat ically .
Press the < iQ > button.
 
¡Look at the LCD panel and press the 
 button to select the dr ive 
mode .
u :Single shooting
When you press the shutter 
button completely, one shot w ill 
be taken .
i :Continuous shooting
(Max . 3 shots per sec .)
Wh ile you press the shutter 
button completely, shots w ill be 
taken cont inuously .
Q :Self-timer/Remote control
(p.48/4 9)
i...

79
5
Advanced Operations
With Creative Zone modes, 
you can set the desired shutter 
speed or aperture value to 
obtain the result you want. You 
take control of the camera.
¡The asterisk  M on the right of the page title indicates that 
the respective feature is available only in Creative Zone 
modes ( d,s ,f ,a ,
88 8
8).
¡ After you press the shutter button halfway and let go, the 
timer operation will keep the LCD panel and viewfinder 
information displayed for about 4 sec. ( 0).
¡ To see what can be...

80
Like  (Full Auto) mode, this is a 
general-purpose shooting mode. The 
camera automatically sets the shutter 
speed and aperture value to suit the 
subject’s brightness. This is called 
Program AE.
* < d> stands for Program *AE  stands for Auto Exposure
1Set the Mode Dial to < d>.
2Focus the subject.
¡ Look through the viewfinder and aim 
any AF point over the subject. Then 
press the shutter button halfway.
3Check the display.
sThe shutter speed and aperture value 
will be set automatically and...