Canon Eos Rebel T2i 550d Instruction Manual

111
Function settings particular to Live View shooting are explained here.
While the image is displayed on the LCD monitor, pressing the < Q> 
button will enable you to set the image-recording quality, drive mode, 
and AF mode. In Creative Zone mode s, you can also set the white 
balance, Picture Style, and  Auto Lighting Optimizer.
1Press the  button.
XThe settable functions will be 
highlighted in blue.
  When < f> is selected, the AF 
points will also be displayed.
2Select a function and set it....

112
Shooting Function Settings
The menu options under the [6] tab’s 
[Live View function settings ] menu are 
explained below.
The functions settable in this menu 
screen only apply during Live View
shooting. These functions do not take 
effect during viewfinder shooting.
  Grid display
With [Grid 1 l] or [ Grid 2 m], you can display grid lines.
  Metering timer
You can change how long the exposure se tting is displayed (AE lock time).
 AF mode
You can select [ Live mode] (p.113), [u  Live mode] (p.114),...

113
The AF modes available are [Live mode], [u Live mode ] (face 
detection, p.114), and [ Quick mode] (p.118).
If you want to achieve precise focus, set the lens focus mode switch to \
< MF>, magnify the image, and  focus manually (p.120).
Select the AF mode.
 Under [6  Live View function 
settings ], select [ AF mode ].
  While the Live View image is 
displayed, you can press the < Q> 
button to select the AF mode on the 
Quick Control screen.
The image sensor is used to focus. Although AF is possible...

114
Using AF to Focus
3Focus the subject.
 Aim the AF point over the subject and 
press the shutter button halfway.
X When focus is achieved, the AF point 
will turn green a nd the beeper will 
sound.
X If focus is not achieved, the AF point 
will turn orange.
4Take the picture.
  Check the focus and exposure, then 
press the shutter button completely to 
take the picture (p.108).
With the same AF method as the Live mode, human faces are detected 
and focused. Have the target  person face the camera....

115
Using AF to Focus
2Focus the subject.
 Press the shutter button halfway and 
the camera will focus the face 
covered by the < p> frame.
X When focus is achi eved, the AF point 
will turn green a nd the beeper will 
sound.
X If focus is not achieved, the AF point 
will turn orange.
  If a face cannot be detected, the AF 
point < > will be displayed and AF 
will be executed at the center.
3Take the picture.
 Check the focus and exposure, then 
press the shutter button completely to 
take the picture...

116
Using AF to Focus
AF operation
 Focusing will take slightly longer.
  Even when focus has been achieved, pressing the shutter button 
halfway will focus again.
  The image brightness may cha nge during and after the AF 
operation.
  If the light source changes while th e Live View image is displayed, 
the screen might flicker and focusing can be difficult. If this happens, 
stop the Live View shooting and  autofocus under the actual light 
source first.
  If you press the < u> button in the Live...

117
Using AF to Focus
Shooting conditions which can make focusing difficult:
 Low-contrast subjects such as the blue sky and solid-color, flat 
surfaces.
  Subjects in low light.
  Stripes and other patterns where  there is contrast only in the 
horizontal direction.
  Under a light source whose brightness, color, or pattern keeps 
changing.
  Night scenes or points of light.
  Under fluorescent lighting or when the image flickers.
  Extremely small subjects.
  Subjects at the edge of the picture....

118
Using AF to Focus
The dedicated AF sensor is used to focus in the One-Shot AF mode 
(p.66), using the same AF me thod as with viewfinder shooting.
Although you can focus th e target area quickly, the Live View image 
will be interrupted momentarily during the AF operation .
1Display the Live View image.
 Press the < A> button.
X The Live View image will appear on 
the LCD monitor.
  The small boxes on the screen are 
the AF points, and the larger box is 
the magnifying frame.
2Select the AF point....

119
Using AF to Focus
3Focus the subject.
 Aim the AF point over the subject and 
press the shutter button halfway.
X The Live View image will turn off, the 
reflex mirror will go back down, and 
AF will be executed.
X When focus is achieved, the beeper 
will sound and the Live View image 
will reappear.
X The AF point used to  focus will light in 
red.
4Take the picture.
  Check the focus and exposure, then 
press the shutter button completely to 
take the picture (p.108).
You cannot take a picture...

120
You can magnify the image and focus precisely manually.
1Set the lens focus mode switch to 
.
 Turn the lens focusing ring to focus 
roughly.
2Move the magnifying frame.
 Press the < S> key to move the 
magnifying frame to the position 
where you want to focus.
  To return the magnifying frame to the 
center, press the  button.
3Magnify the image.
 Press the < u> button.
X The part within the magnifying frame 
will be magnified.
  Each time you press the  button, 
the view will change as follows:...