Canon EOS 5D Mark IV L-series Zoom Lens Kit Owner's Manual

Page of 865
381
3
 Menu Function Settings
Cautions When [Movie Servo AF] is Set to [Enable]
 
Shooting Conditions that Make Focusing Difficult
• A fast-moving subject approaching or moving away from the camera.
• A subject moving at a close distance in front of the camera.
• With a higher f/number
• Also see “Shooting Conditions that Make Focusing Difficult” on page 
324.
 
Since this drives the lens continuously, it will consume battery power and 
shorten the movie shooting time (p.359).
 
With certain lenses, the mechanical sound of the lens for focusing may 
be recorded. If this happens, you can use the Directional Stereo 
Microphone DM-E1 (sold separately) to reduce the mechanical sound of 
the lens to be recorded.
 
Movie Servo AF will pause during zooming or magnified view.
 
During movie shooting, if a subject approaches or moves away or if the 
camera is moved vertically or horizontally (panning), the recorded movie 
image may momentarily expand or contract (change in image 
magnification).
 
If you want to set the lens’s focus mode switch to <MF> during Movie 
Servo AF, first set the Live View shooting/Movie shooting switch to 
<A>.