Canon EOS 5D Mk.4 Manual

							
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3 Selecting AI Servo AF Characteristics N
Once an AF point starts tracking the 
subject, this setting enables the camera 
to consecutively focus on subjects at 
different distances. If a new subject 
appears in front of the target subject, the 
camera will start focusing on the new 
subject. Also effective when you want to 
always focus on the closest subject.
Geared for tracking moving subjects 
whose speed can change dramatically 
and suddenly.
Effective for subjects having sudden 
movements, sudden acceleration, 
sudden deceleration, or sudden stops.
Case 3: Instantly focus on subjects suddenly entering AF points
Default settings• Tracking sensitivity: Responsive: 
+1
• Accel./decel. tracking: +1
• AF pt auto switching: 0
Case 4: For subjects that accelerate or decelerate quickly
If you want to quickly focus on a subject appearing suddenly, setting 
[ Tracking sensitivity ] to [+2] may give better results (p.132).
Default settings• Tracking sensitivity: 0
• Accel./decel. tracking: +1
• AF pt auto switching: 0
If the subject is in motion, and prone  to sudden, dramatic changes in speed, 
setting [ Accel./decel. tracking ] to [+2] may give better results (p.133). 
						

							
3 Selecting AI Servo AF Characteristics N
130
Even if the target subject moves 
dramatically up, down, left, or right, the 
AF point will switch automatically to 
focus-track the subject. Effective for 
shooting subjects that move dramatically 
up, down, left, or right.
It is recommended to use this setting 
with the following modes; AF point 
expansion (manual selection ), AF 
point expansion (manual selection, 
surrounding points), Zone AF, Large 
Zone AF, and Automatic selection AF.
With Single-point Spot AF or Single-point 
AF mode, the tracking action will be the 
same as with Case 1.
Case 5: For erratic subjects moving quickly in any direction
Default settings• Tracking sensitivity: 0
• Accel./decel. tracking: 0
• AF pt auto switching: +1
If the subject moves even more dramatically up, down, left, or right, setting 
[AF pt auto switching ] to [+2] may give better results (p.134). 
						

							
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3 Selecting AI Servo AF Characteristics N
Geared for tracking moving subjects 
whose speed can change dramatically 
and suddenly. Also, if the target subject 
moves dramatically up, down, left or right 
and it is difficult to focus, the AF point 
switches automatically to track the 
subject.
It is recommended to use this setting 
with the following modes; AF point 
expansion (manual selection ), AF 
point expansion (manual selection, 
surrounding points), Zone AF, Large 
Zone AF, and Automatic selection AF.
With Single-point Spot AF or Single-point 
AF mode, the tracking action will be the 
same as with Case 4.
Case 6: For subjects that change speed and move erratically
Default settings• Tracking sensitivity: 0
• Accel./decel. tracking: +1
• AF pt auto switching: +1
 If the subject is in motion, and pro ne to sudden, dramatic changes in 
speed, setting [ Accel./decel. tracking ] to [+2] may give better results 
(p.133).
  If the subject moves even more dramat ically up, down, left, or right, 
setting [ AF pt auto switching ] to [+2] may give better results (p.134). 
						

							
3 Selecting AI Servo AF Characteristics N
132
 Tracking sensitivity
Sets the subject-tracking sensitivity 
during AI Servo AF when an obstacle 
cuts across the AF points or when the 
subject strays from the AF point.
0 Default setting. Suitable for moving subjects in general.
Locked on: -2 / Locked on: -1 The camera will try to continue  focusing on the subject even if an 
obstacle cuts across the AF points or  if the subject strays from the AF 
points. The -2 setting makes the camera keep tracking the target 
subject longer than the -1 setting.
However, if the camera focuses on a wrong subject, it may take 
slightly longer to switch and focus on the target subject.
Responsive: +2 / Responsive: +1 The camera can focus consecutiv ely on subjects at different 
distances that are covered by the AF points. Also effective when you 
want to always focus on the closes t subject. The +2 setting is more 
responsive than the +1 setting  when focusing on the next subject.
However, the camera will be more prone to focus on an unintended 
subject.
Parameters
[ Tracking sensitivity ] is the feature named [ AI Servo tracking sensitivity ] 
in the EOS-1D Mark III/IV, EOS-1Ds Mark III, and EOS 7D. 
						

							
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3 Selecting AI Servo AF Characteristics N
 Acceleration/deceleration tracking
This sets the tracking sensitivity for 
moving subjects whose speed can 
momentarily change dramatically by 
starting or stopping suddenly, etc.
0 Suited for subjects that move at  a steady speed (minor changes in 
moving speed).
-2 / -1 Suited for subjects that move at  a steady speed (minor changes in 
moving speed). It is effective when  0 is set but focus is unstable due 
to the subject’s slight movement or an obstacle in front of the subject.
+2 / +1 Effective for subjects hav ing sudden movements, sudden 
acceleration/deceleration, or sudden stops. Even if the moving 
subject’s speed suddenly changes  dramatically, the camera 
continues to focus on the target subject. For example, for an 
approaching subject, the camera becomes less prone to focus 
behind it to avoid subject blur. Fo r a subject stopping suddenly, the 
camera becomes less prone to focus in front of it. Setting +2 can 
track dramatic changes in the  moving subject’s speed better than 
with +1.
However, since the camera will  be sensitive to even slight 
movements of the subject, focu sing may become unstable for short 
periods. 
						

							
3 Selecting AI Servo AF Characteristics N
134
 AF point auto switching
This sets the switching sensitivity of the 
AF points as they track the subject 
moving dramatically up, down, left, or 
right.
This setting takes effect when the AF 
area selection mode is set to AF point 
expansion (manual selection ), AF 
point expansion (manual selection, 
surrounding points), Zone AF, Large 
Zone AF, or Automatic selection AF.
0 Standard setting for gradual AF point switching.
+2 / +1 Even if the target subject moves dramatically up, down, left, or right 
and moves away from the AF point, the camera switches its focus to 
neighboring AF points to continue  focusing on the subject. The 
camera switches to the AF point deemed most likely to focus on the 
subject based on the subject’s cont inual movement, contrast, etc. 
Setting +2 makes the camera more prone to switch the AF point than 
with +1.
However, with a wide-angle lens havi ng a wide depth of field or if the 
subject is too small in the frame, the camera may focus with an 
unintended AF point. 
						

							
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3 Selecting AI Servo AF Characteristics N
You can manually adjust each case’s three parameters: 1. Tracking 
sensitivity, 2. Acceleration/decele ration tracking, and 3. AF point auto 
switching.
1Select a case.
  Turn the < 5> dial to select the icon 
of the case you want to adjust.
2Press the < c> button.
 The selected parameter will be 
highlighted with a purple frame.
3Select the parameter to adjust.
 Select the parameter to adjust, then 
press < 0>.
4Make the adjustment.
  Adjust the setting, then press < 0>.
X The adjustment is saved.
  The default setting is indicated by the 
light gray [ C] mark.
  To return to the screen in step 1, 
press the < c> button.
Changing Cases’ Parameter Settings
 In step 2, if you press the < c> button, then press the < L> button, 
you can revert the 1, 2, and 3 parameter settings above for each case to 
their defaults.
  You can also register the 1, 2, and 3 parameter settings to My Menu 
(p.515). Doing so will change the selected case’s settings.
  When shooting with a case whose parameters you adjusted, select the 
adjusted case, then take the picture. 
						

							
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With the [22] to [ 25] menu tabs, you 
can set the AF functions to suit your 
shooting style or subject.
You can set the AF operation charac teristics and shutter-release timing 
for the first shot with AI Servo AF.
: Equal priority
Equal priority is given to focusing and 
shutter release.
: Release priority
Pressing the shutter button takes the 
picture immediately even if focus has 
not been achieved. Useful when you 
want to give priority to capturing the 
decisive moment rather than achieving 
focus.
: Focus priority
Pressing the shutter button does not take the picture until focus is 
achieved. Useful when you want  to achieve focus before capturing 
the image.
3  Customizing AF Functions N
22: AI Servo
AI Servo 1st image priorityAF2 
						

							
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3 Customizing AF Functions N
With AI Servo AF for continuous shooting, you can preset the AF 
operation characteristics and shutte r-release timing for the subsequent 
shots after the first shot  in continuous shooting.
0: Equal priority
Equal priority is given to focusing and 
continuous shooting speed. In low 
light or with low-contrast subjects, 
continuous shooting speed may slow 
down.
-2/-1: Shooting speed priority 
Priority is given to the continuous  shooting speed instead of achieving 
focus. With -2, decrease of continuous shooting speed can be better 
prevented than with -1.
+2/+1: Focus priority 
Priority is given to achieving fo cus instead of the continuous shooting 
speed. The picture will not be take n until focus is achieved. Although 
focus can be achieved easier in low-li ght conditions with +2 than with 
+1, continuous shooting speed may decrease.
AI Servo 2nd image priorityAF2
Under shooting conditions that activa te flicker reduction (p.215), even if 
[ Shooting speed priority ]: [-1] or [ -2] is set, the continuous shooting speed 
may become slower or the shooting interval may become irregular.
If focus cannot be achieved in low-light conditions when [ 0: Equal priority] 
is set, setting [ Focus priority ]: [+1 ] or [ +2] may give better results. 
						

							
3 Customizing AF Functions N
138
With the following USM and STM l enses equipped with an electronic 
manual focusing function,  you can set whether to use electronic manual 
focusing.
* As of June 2016.
: Enable after One-Shot AF
After the AF operation, if you keep 
pressing the shutter button halfway, 
you can adjust the focus manually.
: Disable after One-Shot AF
After the AF operation, manual 
focusing adjustment is disabled.
OFF: Disable in AF mode
When the lens’s focus mode switch is set to < AF>, manual focusing 
is disabled.
2 3: One Shot
Lens electronic MFAF3
EF50mm f/1.0L USM EF300mm f/2.8L USM EF600mm f/4L USM
EF85mm f/1.2L USM EF400mm f/2.8L USM EF1200mm f/5.6L USM
EF85mm f/1.2L II USM EF400mm f/2.8L II USM EF28-80mm f/2.8-4L USM
EF200mm f/1.8L USM EF500mm f/4.5L USM
EF40mm f/2.8 STM
EF50mm f/1.8 STM EF24-105mm f/3.5-5.6 IS STM