Canon Eos Rebel Ti 300v Instruction Manual

31
3
User-Controlled Shooting
Selecting an AF point........................................32
Focusing Off-Center Subjects ................................33
When Autofocus Fails .............................................34
Selecting the Film Advance Mode ...............35
Metering Modes......................................................35
: Program AE.......................................................36
: Shutter-Priority AE...........................................38
: Aperture-Priority AE...

32
Selecting an AF point
The AF point is used for focusing. The AF point can be selected auto-
matically by the camera or manually by you. In the Basic Zone modes
and < > mode, the AF point selection is automatic only. In the < >,
< >, < >, and < > modes, the AF point can be selected either
automatically or manually.
The camera selects the AF point automatically according to situation.
You can select any of the seven AF points manually. This is best when you
want to be sure to focus on a particular...

33
Focusing Off-Center Subjects 
If you want to focus an off-center subject not covered by any of the AF
points, use focus lock as described below.
1Select the desired AF point.(→page 32)
2Focus the subject.
•Aim the AF point on the subject, then
press the shutter button halfway.
3Keep pressing the shutter button
halfway and recompose the
picture as desired.
4Take the picture.
Focus lock also works in the Basic Zone modes (except< >). Just start
from step 2above.
NNN E SEC3 (31-51)  02.5.11 11:16 AM...

34
When Autofocus Fails 
The camera has a high-precision AF system which can focus almost all
subjects. However, it can fail to achieve focus (the focus confirmation
light < > blinks) the subjects listed below.
Difficult Subjects for Autofocusing•Low-contrast subjects. Example: Blue sky, flat surface with a solid color.
•Subjects in very low light.
•Extremely backlit or reflective subjects. Example: Automobile with a
strong reflection.
•Overlapping near and far objects. Example: Animal behind bars in a...

35
Selecting the Film Advance Mode
In the One-Shot AF and AI Focus AF (except AI Servo AF) modes (→page
55), when you press the shutter button halfway and focus is achieved, the
exposure is locked automatically at the same time.
The camera has three metering modes: Evaluative, partial, and center-
weighted average metering. Evaluative metering is the standard meter-
ing mode. Partial metering is set automatically when AE lock is used
(
→page 44), and centerweighted average metering is set automatically...

36
:Program AE 
Like the < > (Full Auto) mode, this
is a general-purpose mode to make
picture-taking easy. It sets the shutter
speed and aperture automatically to
suit the subject’s brightness.
∗“P”stands for Program.
∗“AE”stands for auto exposure.
1Turn the Command Dial to < >.
2Press the shutter button halfway
to focus.
3Check the display.The shutter speed and aperture are
set automatically and displayed in the
viewfinder and on the LCD panel.
•If the shutter speed and aperture do
not blink, a correct...

37
The Difference Between < > and < >•The < > and < > modes set the same shutter speed and
aperture settings automatically for picture-taking.
•The following features can be used with < >, but not with < >:
About Program Shift•In the Program AE mode, you can freely change the shutter speed
and aperture combination (program) set by the camera while
retaining the same exposure. This is called program shift.
•To shift the program, press the shutter button halfway and turn the
< > dial until the desired...

38
:Shutter-Priority AE 
Taken with a fast shutter speed.Taken with a slow shutter speed.
In this mode, you set the shutter speed and the camera sets the aper-
ture automatically to suit the brightness of the scene.
A fast shutter speed can freeze the motion of a fast-moving subject. Or,
a slow shutter speed can blur the subject to give the impression of
motion.
∗“Tv”stands for Time value which is the shutter speed.
1Turn the Command Dial to < >.
2Select the desired shutter speed.
•Look at the LCD panel...

39
Shutter Speed Display
•The shutter speed can be set and displayed in full and half stops. Shutter
speeds from “”to “”indicate the denominator of the fractional shutter
speed. For example, “”is 1/125 second. For slower shutter speeds, the
numeral is appended with the seconds mark (“”). For example, “”is
0.7 second and “”is 15 seconds.
•When photographing a TV screen, use 1/15 sec. shutter speed for best
results.
•If the maximum aperture (the lowest 
f/number) blinks, it indicates underexpo-
sure. In...

40
:Aperture-Priority AE 
Taken with a large aperture.Taken with a small aperture.
In this mode, you set the aperture and the camera sets the shutter
speed automatically to suit the brightness of the subject.
A large aperture (lower f/number) will blur the background and make the
subject stand out. The larger the aperture, the more blurred the back-
ground will look.
Or, a smaller aperture (higher f/number) will increase the depth of field
to make both the foreground and background look sharp. The...