Canon CR-N300 Settings Manual page 38

Frame representing the main face (if even one face)
Frame representing a non-main face
Click on a face frame to track that face (P. 38).
• When there is no face in the screen
The [AF Frame Size] setting determines the focus position (P. 38).
[Face Only]
Focuses only on the person's face.
If there is a person's face in the screen, follows the procedure described in the previous section, [Face Det. & Tracking].
If there isn't any person's face in the screen, the focus is locked until a face is detected.
[Touch Operation]
For screen operations, refer to "Clicking on the Screen" (P. 38).
[Cancel Tracking]
Cancels tracking when tracking a specified subject (P. 38).
[AF Mode]
Selects the autofocus mode.
[Continuous]
Always on autofocus.
[AF-Boosted MF]
Click [Near] or [Far] to roughly adjust the focus of the target subject, and it will automatically adjust the focus when the
subject approaches the in-focus position.
Use this mode when the video size is large, such as [3840 x 2160], or when wanting to prevent the focus from becoming
less precise during shooting. In addition, since an uncertain adjustment operation is not performed when adjustment
information cannot be detected, adjustment can be performed more stably than [Continuous].
[AF Speed]
Selects the autofocus adjustment speed. The setting values are High, Normal, and Low in order of speed.
[AF Response]
Selects the responsiveness of the autofocus.
The setting values are High, Normal, and Low in order of the shortest time until the focus operation starts.
[Focus Limit]
Reduces the time to achieve the focus by limiting the focus range.
When set to [On], the focus range is limited to 60 cm (2 ft.) to  (throughout the entire zoom range). When set to off, the
range is 1 cm (0.39 in.; at full wide-angle) to , including the macro area.

Clicking on the Screen
Click the screen to move the AF frame to that position. Even if a person or subject moves in the screen, it is possible
to keep the focus on the main subject. This is called tracking.
When [Face Detection AF] is [Off]
If [AF Frame Size] is [Big] or [Small], the AF frame moves to the point where clicked.
When [AF Frame Size] is set to [Auto], the subject in the center of the screen stays in focus and the AF frame will not
be displayed.
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