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 
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.
sWith predictive AF*, the camera can also 
focus track a subject which steadily 
approaches or retreats from the camera.
s The exposure is set at the moment 
the picture is taken.
One-Shot AF for Still Subjects
AF point  Focus
confirmationlight
AI Servo AF for Moving Subjects
If focus cannot be achieved, the focus confirmation light  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 tr y and focus again. Or see “When Autofocus Fails (Manual Focusing)” (p.76).
In a Creative Zone mode (except ), the beeper will not sound even when 
focus is achieved. Also, the focus confirmation light  in the viewfinder will not light.  
						

							
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 subject is covered by another AF point.
¡ With a manually selected AF point, the selected AF point will focus 
track the subject.
AI Focus AF switches the AF mode from 
One-Shot AF to AI Servo AF 
automatically if the still subject starts 
moving.
After the subject is focused in the One-
Shot AF mode, if the subject starts 
moving, the camera will detect the 
movement and change the AF mode 
automatically to AI Servo AF. 
AI Focus AF for Automatic Switching of AF Mode
When focus is achieved in the AI Focus AF mode with the Servo mode 
active, the beeper will sound softly. The focus confirmation light < o> in the 
viewfinder will not light.  
						

							
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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 you want to focus a particular subject, or autofocus quickly while 
composing the shot.
1Press the < S> button.  (9 )
s
The selected AF point will be 
displayed in the viewfinder and on the 
LCD panel.
2Select the AF point.
¡ Press the < S> key while looking in 
the viewfinder or at the LCD panel.
s
Press the  key to select a 
horizontal AF point, or press the 
key to select a vertical AF point.
¡ By pressing < 0>, you can toggle 
between the center AF point and 
automatic AF point selection.
¡ To return to shooting, press the 
shutter button halfway or press the 
 button again.
S Selecting the AF Point N
Automatic AF Point Selection
Manual AF Point Selection
 Selecting with the Cross Keys
Automatic AF point selection
Automatic AF point selection
Automatic AF point selection
Automatic AF point selection  
						

							
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> button, then turn the 
< 6 > dial.
¡
When you turn the dial, the selection will go 
in the looping sequence sho wn on the left.
About AF-Assist beam with the Built-in Flash
¡ When looking at the LCD panel to select the AF point, note the following:
Automatic selection  , center  , 
right , top 
¡ If focus cannot be achieved with an EOS-dedicated, external Speedlite’s 
AF-assist beam, select the center AF point.
¡In the < 3> < 5 >  modes, the AF-assist beam does not light.
¡The built-in flash’s AF-assist beam is effective up to about 4 meters/13.2 feet.¡ In the Creative Zone modes when you pop-up the built-in flash with the 
 button, the AF-assist beam will be fired when necessary.  
						

							
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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 to Servo mode), focus 
lock will not work.
Focus lock is also possible in Basic Zone modes (except ). In this 
case, start from step 3.  
						

							
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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 following:
(1) Focus an object at the same distance as the subject and lock the  focus before recomposing. (p.75)
(2) Set the lens focus mode switch to < MF> and focus manually.
1Set the lens focus mode switch to 
.
2Focus the subject.
¡Focus by turning the lens focusing 
ring until the subject is in focus in the 
viewfinder.
When Autofocus Fails (Manual Focusing)
Manual Focusing
Focusing ring
If you press the shutter button halfway during manual focusing, the AF 
point(s) achieving focus and the focus confirmation light < o> in the 
viewfinder will light when focus is achieved.  
						

							
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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 the LCD panel.
q  Evaluative Metering
This is the camera’s standard metering mode suited for most 
subjects even under backlit conditions. After detecting the 
main subject’s position, brightness, background, front and 
back lighting, etc., the camera sets the proper exposure.
¡ During manual focusing, evaluative metering is based 
on the center AF point.
¡ If the subject brightness and background light level are 
very different (there is a strong backlight or spotlight), 
use partial metering < w> instead.
w  Partial Metering
Effective when the background is much brighter than the 
subject due to backlighting, etc. Partial metering covers 
about 9% of the viewfinder area at the center. The area 
covered by partial metering is shown on the left.
e Center-weighted Average Metering
The metering is weighted at the center and then averaged 
for the entire scene.
q  Selecting the Metering Mode N  
						

							
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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  Selecting the Drive Mode
¡ Dur ing cont inuous shoot ing, the captured 
i mages are first stored  in the camera ’s 
buffer memory and then success ively 
transferred to the CF card . When the 
buffer memory becomes full dur ing cont inuous shoot ing,  “buSY ”w ill be 
d isplayed on the LCD panel and  in the v iewfinder and the camera cannot 
take any more shots . As the captured  images are transferred to the CF 
card, you w ill be able to capture more  images . Press the shutter button 
halfway to check  in the v iewfinder ’s bottom r ight the current rema in ing 
shots of the max imum burst .
¡ If “FuLL CF ”is d isplayed  in the v iewfinder and on the LCD panel, wa it 
unt il the access lamp stops bl ink ing, then replace the CF card .
¡ When the battery level  is low, the max imum burst w ill be sl ightly lower
.
Max . Burst  
						

							
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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 set in the Creative Zone modes, see 
“Function Availability Table” (p.152).
Creativezone  
						

							
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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 
displayed in the viewfinder and on the 
LCD panel.
¡ A correct exposure will be obtained 
as long as the shutter speed and 
aperture value display do not blink.
4Take the picture.
¡Compose the shot and press the 
shutter button completely.
dProgram AE
AF point
Shutter speed
Aperture