Canon Eos Rebel T3i 600d Instruction Manual

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The AF modes available are [Live mode], [u Live mode ] (face 
detection, p.132), and [ Quick mode] (p.136).
If you want to achieve precise focus, set the lens focus mode switch to \
< MF>, magnify the image, and  focus manually (p.138).
Select the AF mode.
 Under the [ z] tab, select [ AF mode] 
([ 2 ] tab in Basic Zone modes).
  Select the desired AF mode, then 
press < 0>.
  While the Live View image is 
displayed, you can press the < Q> 
button to select the AF mode on the 
Quick Control screen (p.128).
The image sensor is used to focus. Although AF is possible with the 
Live View image displayed,  the AF operation will take longer than 
with the Quick mode . Also, achieving focus may be more difficult than 
with the Quick mode.
1Display the Live View image.
 Press the < A> button.
X The Live View image will appear on 
the LCD monitor.
X The AF point < > will appear.
2Move the AF point.
  Press the < S> key to move the AF 
point to where you want to focus (it 
cannot go to the edges of the picture).
  To return the AF point to the center, 
press the < 0> or < L> button.
Changing the Autofocus Mode
Selecting the AF Mode
Live Mode:  d
AF point
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Changing the Autofocus Mode
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.124).
With the same AF method as the Live mode, human faces are detected 
and focused. Have the target  person face the camera.
1Display the Live View image.
 Press the < A> button.
X The Live View image will appear on 
the LCD monitor.
  When a face is detected, the < p> 
frame will appear over the face to be 
focused.
  If multiple faces are detected,  
will be displayed. Press the < U> 
key to move the < q> frame over 
the desired target face.
u  (Face detection) Live Mode:  c
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Changing the Autofocus Mode
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 (p.124).
 If the focus is way off, face detection will not be poss ible. If the lens 
enables manual focusing even while the lens focus mode switch is set to 
, turn the focusing ring to attain  rough focus. The face will then be 
detected and < p> will be displayed.
  An object other than a human fa ce might be detected as a face.
  Face detection will not wo rk if the face is very small or large in the 
picture, too bright or too dark, titled  horizontally or diagonally, or partially 
hidden.
  The < p> focusing frame might cove r only part of the face.
 When you press the < 0> or < L> button, the AF mode  will switch to the 
Live mode (p.131).  You can press the < S> key to move  the AF point. 
Press the < 0> or < L> button again to  return to the u (face detection) 
Live mode.
  Since AF is not possible  with a face detected near the edge of the 
picture, the < p> will be grayed out. Then if you press  the shutter button 
halfway, the center AF poin t < > will be used to focus.
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Changing the Autofocus Mode
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 may 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 mode, the image will be 
magnified at the AF point. If focusing  is difficult in the magnified view, 
return to the normal view and autofocus. Note that the AF speed 
may differ between the normal and magnified views.
  If you autofocus in the Live mode’s normal view and then magnify 
the image, the focus might be off.
  In the  u Live mode, pressing the < u> button will not magnify the 
image.
Live Mode and u (Face Detection) Live Mode Notes
  In the Live mode or  u (face detection) Live mode, if you shoot a 
peripheral subject and it is slightly  out of focus, aim the center AF point 
over the subject to focus,  then take the picture.
  The AF-assist beam will not be em itted. However, if an EX-series 
Speedlite (sold separately) equipped  with a LED light is used, the LED 
light will turn on for  AF-assist when necessary  in the Live mode and u 
(face detection) Live mode.
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Changing the Autofocus Mode
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.
  Subjects strongly reflecting light.
  The AF point covers both a near  and faraway subject (such as an 
animal in a cage).
  Subjects which keep moving within  the AF point and cannot keep 
still due to camera shake or subject blur.
  A subject approaching or moving away from the camera.
  Autofocusing while the subj ect is way out of focus.
  Soft focus effect is applied with a soft focus lens.
  A special effects filter is used.
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Changing the Autofocus Mode
The dedicated AF sensor is used to focus in One-Shot AF mode (p.83), 
using the same AF method 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.  N
 Press the < Q> button ( 7) to 
display the Quick Control screen.
X The settable functions will be 
displayed on the left of the screen.
  Press the < V> key to make the AF 
point selectable.
  Turn the < 6> dial to select the AF 
point.
Quick Mode:  f
AF point
Magnifying frame
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Changing the Autofocus Mode
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 achi eved, the AF point 
which achieved focus will turn green 
and the Live View image will 
reappear.
X If focus is not achieved, the AF point 
will turn orange and blink.
4Take the picture.
  Check the focus and exposure, then 
press the shutter button completely to 
take the picture (p.124).
You cannot take a picture during auto focusing. Take the picture while the 
Live View image is displayed.
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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  or  
button.
3Magnify the image.
  Press the < u> button.
X The area within the magnifying frame 
will be magnified.
  Each time you press the  button, 
the view will change as follows:
4Focus manually.
  While looking at the magnified image, 
turn the lens focusing ring to focus.
  After achieving focus, press the < u> 
button to return to the normal view.
5Take the picture.
  Check the focus and exposure, then 
press the shutter button to take the 
picture (p.124).
MF: Focusing Manually
Magnifying frame
AE lock
Magnified area position
Magnification
5x      10x      Normal view
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Live View Shooting Cautions
White  and Red < E> Internal Temperature Warning Icons  If the camera’s internal temperatu re increases due to prolonged Live 
View shooting or a high ambi ent temperature, a white  icon will 
appear. If you continue sh ooting while this icon is displayed, the image 
quality of still photos may deteriora te. You should stop the Live View 
shooting and allow the  camera to cool down before shooting again.
  If the camera’s internal temperatu re further increases while the white 
 icon is displayed, a red  icon will start blinking. This blinking 
icon is a warning that the Live View  shooting will soon be terminated 
automatically. If this happens, you will  not be able to shoot again until the 
camera’s internal temperature decrea ses. Turn off the power and let the 
camera rest for a while.
  Shooting with the Live View func tion at a high temperature for a 
prolonged period will cause the < s> and < E> icons to appear earlier. 
When not shooting, tu rn off the camera.
Live View Image Cautions Under low- or bright-light conditio ns, the Live View image might not 
reflect the brightness  of the captured image.
  If the light source within the image  changes, the screen might flicker. If 
this happens, stop the Live View shooting  and resume shooting under 
the actual light so urce to be used.
  If you point the camera in  a different direction, it might throw off the Live 
View image’s correct brightness mo mentarily. Wait until the brightness 
level stabilizes be fore shooting.
  If there is a very bright  light source in the pictur e, such as the sun, the 
bright area might appear  black on the LCD monitor.  However, the actual 
captured image will correc tly show the bright area.
  In low light, if you set the [ 6 LCD brightness ] to a bright setting, 
chrominance noise may appear in th e Live View image. However, the 
chrominance noise will not be recorded in the captured image.
  When you magnify the image, the image sharpness may look more 
pronounced than it really is.
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Live View Shooting Cautions
Shooting Result Cautions When you shoot continuous ly with the Live View function for a long 
period, the camera’s internal temp erature may increase and it can 
degrade image quality. Terminate Live  View shooting when not shooting 
images.
  Before taking a long exposure, stop  Live View shooting temporarily and 
wait several minutes before shoo ting. This is to prevent image 
degradation.
  Live View shooting in high temperatures and at high ISO speeds may 
cause noise or irregular colors.
  When you shoot at high ISO speeds,  noise (banding, dots of light, etc.) 
may become noticeable.
  If you take the picture during magn ified view, the exposure might not 
come out as desired. Return to the n ormal view before taking the picture. 
During the magnified vi ew, the shutter speed and aperture will be 
displayed in orange. Even  if you take the picture during magnified view, 
the image will be captured in the normal view.
  If [2  Auto Lighting Optimizer ] (p.109) is not set to [Disable], the 
image may look bright ev en if a decreased exposure compensation or 
decreased flash exposure co mpensation has been set.
  If you use a TS-E lens  to shift the lens vertically or use an Extension 
Tube, the standard exposure might not be obtained or an irregular 
exposure may result.
Custom Function Cautions  During Live View shooting, certain Cu stom Function settings will not take 
effect (p.251).
Lens and Flash Cautions  The focus preset featur e on super telephoto lenses cannot be used.
  FE lock is not possible when the built -in flash or an external Speedlite is 
used. Modeling flash will not wo rk with an external Speedlite.
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