How to set and use Live Face Detection Mode on the EOS 50D.

Article ID: ART104000 | Date published: 05/11/2015 | Date last updated: 08/15/2015
 

Description

How to set and use Live Face Detection Mode on the EOS 50D.

Solution

With the same AF method as with the Live mode, the human face is detected and focused. Have the person face the camera
1 Display the Live View image.
  • Press the <> button.
  • The Live View image will appear on the LCD monitor.
  • When a face is detected, the frame will appear over the face to be focused.
  • If multiple faces are detected, will be displayed. Use the to move the frame over the target face.

2 Focus the subject.

  • Press the AF-ON button to focus the face covered by the frame.
  • When focus is achieved, the AF point will turn green and the beeper will sound.
  • If focus is not achieved, the AF point will turn red.
  • If a face cannot be detected, the AF point will be fixed to the center for focusing.

3 Take the picture.

  • Check the focus and exposure, then press the shutter button to take the picture
  • The face-detecting AF point might cover only part of the face.
  • An object other than a human face might be detected as a face.
  • Face detection will not work if the face is very small or large in the picture, too bright or too dark, titled horizontally or diagonally, or partially hidden.
  • When you press straight down, it will switch to the Live mode You can tilt the to switch to another AF point. If you press straight down again, it will switch back to Live (face detection) mode.
  • Since AF is not possible with a face detected near the edge of the picture, the will be grayed out. Then when you press the AF-ON button, the center AF point will be used to focus.

Live Mode and Live Face Detection Mode Notes

AF operation

  • It will take a slightly longer time to focus.
  • Even when focus has been achieved, pressing the AF-ON button will focus again.
  • The image brightness may change during and after the AF operation.
  • If the image flickers, making it difficult to focus, stop and resume the Live View shooting under the actual light source to be used. Check that the flickering has stopped, then autofocus.
  • If you press the <> button in the Live mode, the AF point area will be magnified. If it is difficult to focus in the magnified view, return to the normal view and autofocus. Note that the AF speed may differ between the normal and magnified views.
  • If you autofocus in the Live mode's normal view and then magnify the image, the focus might be off.
  • In the Live mode, pressing the <> button will not magnify the image
  • The AF-assist beam will not be emitted.
  • Autofocus will not work with the release button on the Remote Switch RS-80N3 and Timer Remote Controller TC-80N3 ( sold separately).

Shooting conditions which can make focusing difficult:

  • Low-contrast subjects such as the blue sky and solid-color surfaces.
  • Subjects in low light.
  • Stripes and other patterns where there is contrast only in the horizontal direction.
  • Under a light source whose brightness, color, or pattern keeps changing.
  • Night scenes or points of light.
  • Under fluorescent lighting or when the image flickers.
  • Extremely small subjects.
  • Subjects strongly reflecting light.
  • The AF point covers a near and faraway subject (such as an animal in a cage).
  • Subjects which keep moving within the AF point and cannot keep still due to camera shake or subject blur.
  • A subject approaching or moving away from the camera.
  • Autofocusing while the subject is way out of focus.
  • Soft focus effect is applied with a soft focus lens.
  • A special effects filter is used.

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