Face Detection AF on the EOS C700 and EOS C700 FF

Article ID: ART174748 | Date published: 06/17/2019 | Date last updated: 06/17/2019


When the face detection function is activated, the camera will detect people's faces. When there are a number of people in the picture, one person will be determined to be the main subject but you have the option to select a different person as the main subject. The camera will keep tracking the main subject even when it moves. You can use face detection with one of the autofocus functions to let the camera focus on the main subject automatically (Face AF). You can also combine face detection with the focus guide to help you focus on the main subject manually.


C700 C700 FF Face Detection​

  1. Activate the face detection function.
    Setup screen: ALT  [AF]  [FACE] (set it to [On])
    Monitoring menu: EVF  [Camera Setup] ( [Focus]  [Face Detection] ​ [On]
    • Alternatively, you can press an assignable button set to [Face Detection].
    • Press [FACE] again (setup screen) or select [Off] instead (monitoring menu) to turn off the function.
  2. Open the [Face AF] submenu.
    Setup screen: From the same [AF] screen select [OPTIONS]  [Face AF]
    Monitoring menu: From the same submenu select [Face AF]
  3. Select the desired option and then press SET.
    • Alternatively, you can press an assignable button set to [Face AF].
    •  or  will appear at the left of the monitoring screen.
  4. Point the camera at the subject.
    • A face detection frame will appear around all detected faces. The person identified as main subject will have a face detection frame with small arrows () on the sides.
    • When the [Face Only] option is used,  will appear in white when a face is detected and in gray when a face is not detected.
    • During continuous AF, the camera will keep focusing on the main subject's face. During one-shot AF, the camera will focus on the main subject's face while you hold the ONE-SHOT AF button pressed down.
    • If you use face detection together with the tracking function, the camera will be able to track the selected main subject more reliably.
  5. If necessary, change the main subject when there is more than one person detected in the frame.
    Setup screen: In the [AF] screen's or [Focus Assistance Functions] screen's [Move frame] screen (ALT  [AF] or [F.ASSIST.]  [ FRAME], press [] or [].
    Monitoring screen: Push the joystick (left/right) or turn the SELECT dial on the optional viewfinder.
[Face Priority]: When there is no face detected, the camera focuses automatically according to the AF mode currently selected.
[Face Only] When there is no face detected, the camera locks focus.

Face AF operation by AF mode
[AF Mode] setting and focus operation [Face AF] setting
[Face Priority] [Face Only]
Face detected No face detected Face detected No face detected
[One Shot] while the ONE-SHOT AF button is not pressed Manual focus
[One Shot] while the ONE-SHOT AF button is held pressed down Focus on the
detected face
Focus on the
subject inside
the AF frame
Focus on the
detected facce
Manual focus
[Continuous] (autofocus),
[AF-Boosted MF] within the automatic adjustment range
[AF-Boosted MF] within the manual adjustment range (yellow AF frame) Manual focus

  • In certain cases, faces may not be detected correctly. Typical examples include:
    • Faces extremely small, large, dark, or bright in relation to the frame.
    • Faces that are turned to the side, at a diagonal, partially hidden or upside-down.
  • Face detection cannot be used in the following cases:
    • When the shutter speed used is slower than 1/30 (59.94 Hz recordings), 1/25 (50.00 Hz recordings) or 1/24 (24.00 Hz recordings).
    • When slow & fast motion recording is activated.
    • When the second frame of the focus guide function is displayed.
    • When a manual focus lens is attached to the camera.
    • When ALT  [F.ASSIST.]  [OPTIONS]  [Magnification] ​ [Available While Rec] is set to [On].
  • The camera may mistakenly detect the faces of non-human subjects. In such case, turn face detection off.

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