Canon 5dsr 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.114).
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.115). 
						

							3 Selecting AI Servo AF Characteristics N
112
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 (manual 
selection of zone), and 61-point 
automatic selection AF.
With Single-point Spot AF (manual 
selection) or Single-point AF (manual 
selection) 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.116). 
						

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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 (manual 
selection of zone), and 61-point 
automatic selection AF.
With Single-point Spot AF (manual 
selection) or Single-point AF (manual 
selection) 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.115).
 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.116). 
						

							3 Selecting AI Servo AF Characteristics N
114
Tracking sensitivity
Sets the subject-tracking sensitivity 
during AI Servo AF when an obstacle 
enters the AF points or when the AF 
points stray from the subject.
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 enters the AF points or if the subject strays from the AF 
points. The -2 setting makes the camera track the target subject 
longer than with 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 consecutively 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 when focusing on the next subject than +1.
However, the camera will be more prone to focus on the wrong 
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 
suddenly change dramatically by starting 
or stopping suddenly, etc.
0 Suited for subjects that move at a steady speed (minimal change in 
moving speed).
+2 / +1 Effective for subjects ha ving 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.  For a subject stopping suddenly, the 
camera becomes less prone to focus in front of it. Setting +2 can 
track dramatic changes in the mo ving subject’s speed better than 
with +1.
However, since the camera will be sensitive even to the slight 
movements of the subject, the focusing may momentarily become 
unstable. 
						

							3 Selecting AI Servo AF Characteristics N
116
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 (manual 
selection of zone), or 61-point automatic 
selection AF.
0 Standard setting for gradual AF point switching.
+2 / +1 Even if the target subject moves dram atically 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 continual movement, contrast, etc. 
Setting +2 makes the camera more prone to switch the AF point 
than with +1.
However, with a wide-angle lens having a wide depth of field or if the 
subject is too small in the frame,  the camera may focus with the 
wrong 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  button.
The selected parameter will have a 
purple frame.
3Select the parameter to adjust.
Select the parameter to adjust, then 
press < 0>.
 When Tracking sensitivity is selected, 
the setting screen will appear.
4Make the adjustment.
Adjust the setting, then press .
 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 and then press the < L> 
button, you can revert the 1, 2 and 3 parameter settings above for each 
case.
 You can also register the 1, 2, and 3 parameter settings to My Menu 
(p.432). Doing so will change the selected case’s settings.
 When shooting with a case whose parameters you adjusted, select the 
adjusted case and 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. It is effective when 
you want to give priority to capturing 
the image rather than achieving focus.
: Focus priority
Pressing the shutter button does not take the picture until focus is 
achieved. Effective when you want  to achieve focus before capturing 
the image.
3  Customizing AF Functions N
22: AI Servo
AI Servo 1st image priority 
						

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3 Customizing AF Functions N
You can set the AF operation charac teristics and shutter-release timing 
during continuous shooting after the  first shot with AI Servo AF.
: Equal priority
Equal priority is given to focusing and 
continuous shooting speed. In low 
light or with low-contrast subjects, 
shooting speed may slow down.
: Shooting speed priority
Priority is given to the continuous shooting speed instead of 
achieving focus.
: Focus priority
Priority is given to achievi ng focus instead of the continuous 
shooting speed. The picture will not  be taken until focus is achieved.
AI Servo 2nd image priority
Under shooting conditions which activa te anti-flicker shooting (p.191), even 
if [Shooting speed priority ] is set, the continuous shooting speed may 
become slightly slower or the shoo ting interval may become irregular. 
						

							3 Customizing AF Functions N
120
With the following USM and STM lenses equipped with an electronic 
manual focusing function, you can set whether to use electronic manual 
focusing.
: Enable after One-Shot AF
After AF operates, if you keep 
pressing the shutter button halfway, 
you can adjust the focus manually.
: Disable after One-Shot AF
After AF operates, 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 MF
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 EF70-300mm f/4-5.6 IS II USM
EF40mm f/2.8 STM EF50mm f/1.8 STM
EF24-105mm f/3.5-5.6 IS STM