Canon EOS 80D - Manual (Page 181)

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Selecting the AF OperationN
This AF operation is suited for moving subjects. While you hold
down the shutter button halfway, the camera will keep focusing on
the subject continuously.
 If the drive mode is set to high-speed continuous shooting, the
maximum speed will be approx. 5.0 fps. The pictures will be taken
with priority given to the continuous shooting speed.
 If the drive mode is set to low-speed continuous shooting, the
maximum speed will be approx. 3.0 fps. The pictures will be taken
with priority given to subject tracking.
 For flash photography, the continuous shooting speed will become
slower.
 When focus is achieved, the AF point will turn blue. The beeper will
not sound in this case.
 The exposure is set at the moment the picture is taken.
 Depending on the lens used, the distance to the subject, and the
subject’s speed, the camera may not be able to achieve correct
focus.
 If you operate the zoom during continuous shooting, the focus may
be lost. Shoot after using the zoom to obtain the desired
composition.
Servo AF for Moving Subjects
 With [ Servo AF ] , the image quality can be set to 1 or JPEG. If 41
or 61 is set, the image will be recorded in 1 quality.
 When [Servo AF] is set and Multi Shot Noise Reduction is set, [High ISO
speed NR] will automatically switch to [Standard].