Canon 70d W User Manual

241
Using AF to Focus (AF Method)
Shooting Conditions that Make Focusing Difficult
 Low-contrast subjects such as the blue sky, solid-color flat surfaces 
or when highlight or shadow details are lost.
  Subjects in low light.
  Stripes and other patterns where  there is contrast only in the 
horizontal direction.
  Subjects with repetitive pattern s (skyscraper windows, computer 
keyboards, etc.).
  Fine lines and subject outlines.
  Under a light source whose brightness, color, or pattern keeps...

Using AF to Focus (AF Method)
242
If you cannot achieve focus under the shooting conditions listed on the 
preceding page, set the lens  focus mode switch to  and focus 
manually.
  If you shoot a peripheral subject and it is slightly out of focus, aim the 
center AF point or zone  over the subject to focus,  focus again, and then 
take the picture.
  The AF-assist beam will not be em itted. However, if an EX-series 
Speedlite (sold separately) equipped  with an LED light is used, the LED 
light will...

243
Using AF to Focus (AF Method)
The dedicated AF sensor is used to focus in One-Shot AF mode 
(p.100), using the same AF method as with viewfinder shooting.
Although you can focus the target area quickly,  the Live View image 
will be interrupted momentar ily during the AF operation.
In AF area selection modes other t han 19-point automatic selection AF, 
you can manually select the AF point. In Basic Zone modes, 19-point 
automatic selection AF is set automatically.
1Display the Live View image....

Using AF to Focus (AF Method)
244
 The AF point (or zone) selection will 
change in the direction you tilt < 9>.
  If you press < 0>, the center AF 
point (or center Zone) will be 
selected.
  You can also use the < 6> and 
< 5 > dials to select the AF point.
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. (No picture is taken.)
X When focus is achieved, the...

245
Just by tapping the LCD monitor screen, you can focus and take the 
picture automatically. This works in all shooting modes.
1Display the Live View image.
 Press the < 0> button.
X The Live View image will appear on 
the LCD monitor.
2Enable the touch shutter.
  Tap [y ] on the screen’s bottom left. 
Each time you tap the icon, it will 
toggle between [ y] and [x ].
  [x ] (Touch shutter: Enable)
You can focus and shoot by tapping 
the screen.
  [y ] (Touch shutter: Disable)
You can select where you...

x Shooting with the Touch Shutter
246
 Even if < o>, , or < M> is set, single shooting will take effect.
  The touch shutter does  not function during magnified view.
  When [V  Shutter butt. half-press ] is set to [Metering start ] or [AE 
lock (while button pressed) ] under [8 C.Fn III-4: Custom Controls], 
autofocusing does not take effect.
  You can also set the  touch shutter with [A 1: Touch shutter].
  To take a bulb exposure, tap the screen  twice. The first tap on the screen 
will start the bulb...

247
You can magnify the image and focus precisely with manual focus.
1Set the lens focus mode switch to 
.
 Turn the lens focusing ring to focus 
roughly.
2Display the magnifying frame.
 Press the < u> button.
X The magnifying frame will appear.
  You can also tap [ u] on the screen to 
magnify the image.
3Move the magnifying frame.
  Press < 9> to move the magnifying 
frame to the position where you want 
to focus. You can also tap it to move 
it.
  To return the magnifying frame to the 
center, press <...

MF: Focusing Manually
248
5Focus 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.
6Take the picture.
  Check the focus and exposure, then 
press the shutter button completely to 
take the picture (p.216).
COPY  

249
Live View Shooting Cautions
Image Quality
 When you shoot at high ISO speeds,  noise (such as dots of light and 
banding) may become noticeable.
  Shooting in high temperatures may  cause noise and irregular colors in 
the image.
  If Live View shooting is used cont inuously for a prolonged period, the 
camera’s internal temperature  may rise, and image quality may 
deteriorate. Always exit Live View shooting when you are not shooting.
  If you shoot a long expo sure while the camera’s internal...

250
Live View Shooting Cautions
Live View Image
 Under low- or bright-light  conditions, the Live View image may not reflect 
the brightness of the captured image.
  Even if a low ISO speed  is set, noise may be noticeable in the displayed 
Live View image under low light. However, when you shoot, the image 
recorded will have minimal noise. (T he image quality of the Live View 
image is different from t hat of the recorded image.)
  If the light source (illumination) wi thin the image changes, the...