Canon EOS 5D Mk.4 Manual

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< > stands for “AF stop button” provided on super telephoto lenses 
equipped with Image Stabilizer. 

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500
When you press the button assigned to  this function, metering and AF 
are performed.
*1:  When assigned to the < p> or  button, 
pressing the < B> button while the setting 
screen is displayed will enable you to set the 
detailed AF settings. When shooting, pressing the 
< p > or  button will perform AF as it 
was set.
  AF start position
When [ Registered AF point ] is set, you can press the < p> or 
< A > button to switch to the registered AF point.
Registering the AF Point
1....

501
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 AI Servo AF characteristics  (p.127)
Press the < p> or  button to perform AF with the set case 
from [ Case 1 ] to [Case 6 ].
  AF operation  (p.100)
Press the < p> or  button to perform AF with the set AF 
operation.
  AF area selection mode  (p.104)
Press the < p> or  button to perform AF with the set AF 
area selection mode.
If you want to keep using the currently selected AF point when you 
press the < p> or  button, set [ AF start position ] to 
[ Manually selected AF point...

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502
Only while you hold down the depth-of-field preview button or the lens’s 
AF stop button, you can apply AF with the following settings: AF area 
selection mode (p.104), Tracking sensitivity (p.132), Acceleration/
deceleration tracking (p.133), AF point  auto switching (p.134), Servo 1st 
image priority (p.136), and Servo 2nd image priority (p.137). Useful 
when you want to change the AF characteristics during AI Servo AF.
*2: On the setting screen, press the < B> button to...

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While the metering timer is active, when you press the depth-of-field 
preview button or the lens’s AF stop button, the focusing point can be 
switched to the registered AF point.
*4: On the setting screen, when you press the < B> button, you can select [ Switch 
only when btn is held ] or [Switch each time btn is pressed ]. To register the AF 
point, see page 500.
While the metering timer is active, pressing the < p> (AF area 
selection) button will switch between the current AF...

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504
If the metering timer is active, you can press the < p> (AF area 
selection) button to directly select an AF area selection mode without 
pressing the < S> button.
When Movie Servo AF is active, you  can pause the AF by pressing the 
Depth-of-field preview button or < 0>. Press the button again to 
resume Movie Servo AF.
When you press the shutter button halfway, exposure metering is 
performed (AF is not performed).
When you press the button assigned to  this function, you can...

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When you press the button assigned to  this function, you can lock the 
exposure (AE lock). The AE lock will  be maintained until you press the 
button again. Useful when you want to set the focus and meter 
separately or take multiple shots at the same exposure setting.
When you press the button assigned to  this function, you can lock the 
exposure (AE lock) and the AF will stop.  Useful with AI Servo AF if you 
want to perform AE lock at the same time when AF stops.
For flash...

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506
While the metering timer is active,  you can set the ISO speed by turning 
the < 5> dial. If this control is used with ISO Auto set, you can set the 
ISO speed manually. (Even after the metering timer ( 0) ends, ISO 
Auto will not be restored.) If you use this function in the < a> mode, you 
can adjust the exposure with the  ISO speed while maintaining the 
current shutter speed and aperture value.
You can set the exposure compensation by holding down < 0> and 
turning the < 6>...

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Pressing the depth-of-field preview button or  button will switch to 
enable shooting with the image-recor ding quality set here. If [Show/hide in 
viewfinder
] has [Image quality] checkmarked [X] (p.84), the image-
recording quality (JPEG or RAW image type) will blink in the viewfinder. After 
the shooting ends, the One-touch imag e quality setting will be canceled and 
the image-recording quality will be sw itched back to the previous quality.
*8: On the setting screen, when...

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Press  to display the Picture Style selection setting screen on the 
LCD monitor (p.183).
When you press the depth-of-field preview button or < 0>, the aperture 
will stop down and you can check the depth of field (p.250).
If you press the depth-of-field preview button or the lens’s AF stop 
button with the lens’s IS switch set to < 1>, the lens’s Image 
Stabilizer will  be activated.
Press < 0> to display the menu on the LCD monitor.
You can manually set the main shooting...