Canon : Product Manual : EOS REBEL T8i / EOS 850D : Selecting the AF Methods (Live View Shooting)

Article ID: ART177044 | Date published: 06/19/2020 | Date last updated: 07/21/2020
 

Description

Canon : Product Manual : EOS REBEL T8i / EOS 850D : Selecting the AF Methods (Live View Shooting)

Solution

Selecting the AF Methods (Live View Shooting)

AF Method

: Face+Tracking

The camera detects and focuses on people's faces. An AF point [] appears over any face detected, which is then tracked.

If no face is detected, the entire AF area is used for focusing.

: Spot AF

The camera focuses in a narrower area than [1-point AF].

: 1-point AF

The camera focuses using a single AF point [1-point AF].

: Zone AF

Focuses in a wide Zone AF frame, which makes it easier to acquire subjects than with [1-point AF].

Prioritizes focusing on the nearest subject. Faces of any people in the Zone AF frame are also given priority in focusing.

AF points in focus are displayed with 1-point AF.

Selecting the AF Method

  1. Press the AF area selection button.

  2. Select the AF method.

    • Each time you press the AF area selection button, the AF method changes.
    • You can also make your selection from [Shooting: AF method].

Note

Face+Tracking: Face+Tracking

The camera detects and focuses on people's faces. If a face moves, the AF point [AF point] also moves to track the face.

You can set [Eye Detection AF] to [Enable] to shoot with the subject's eyes in focus ().

These instructions apply to the camera with AF operation set to [One-Shot AF] (). With [Servo AF] () set, the AF point will turn blue when focus is achieved.

  1. Check the AF point.

    • An AF point [AF point] appears over any face detected.
    • If [AF point adjustment] is displayed, you can use the Left key Right key keys to choose a face to focus on.
    • Press SET to move the AF point to the face of the person in the center of the screen.
  2. Focus and take the picture.

    • Once you press the shutter button halfway and the subject is in focus, the AF point turns green and the camera beeps.

      An orange AF point indicates that the camera could not focus on subjects.

Tapping a face for focus

Tapping a face or subject to focus on changes the AF point to [Tracking subject] and focuses where you tap.

Even if the face or subject moves on the screen, the AF point [Tracking subject] moves to track it.

Caution

  • If the subject's face is significantly out of focus, face detection will not be possible. Adjust the focus manually () so that the face can be detected, then perform AF.
  • An object other than a human face may 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, or partially hidden.
  • AF cannot detect subjects or people's faces at the edges of the screen. Recompose the shot to center the subject or bring the subject closer to the center.

Note

  • The active [AF point] may cover only a part of the face, not the whole face.
  • The size of the AF point changes depending on the subject.

Spot AF/1-point AF/Zone AF

You can manually set the AF point or Zone AF frame. Here, 1-point AF screens are used as an example.

  1. Check the AF point.

    • The AF point (1) will appear. With Zone AF, the Zone AF frame is displayed.
  2. Move the AF point.

    • Use the Up key Down key Left key Right key keys to move the AF point to where you want to focus (but note that with some lenses, it may not move to the edge of the screen).

      You can also tap the screen to move the AF point.

      To center the AF point or Zone AF frame, press SET.

    • You can also center the AF point by tapping Return icon.
  3. Focus and take the picture.

    • Aim the AF point over the subject and press the shutter button halfway. 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 orange.

Caution

  • AF points may not track subjects under some shooting conditions when [Servo AF] is used with Zone AF.
  • Focusing may be difficult when using a peripheral AF point. In this case, select an AF point in the center.

Eye Detection AF

With the AF method set to [Face+Tracking], you can shoot with the subject's eyes in focus.

  1. Select [Shooting: Eye Detection AF].

  2. Select [Enable].

  3. Aim the camera at the subject.

    • An AF point is displayed around their eye.
    • You can tap the screen to select an eye for focus.

      The entire face is selected when you tap other facial features, such as their nose or mouth. Eyes to focus on are selected automatically.

    • When [AF point adjustment] is displayed, you can choose an eye or face to focus on with the Left key Right key keys, depending on the [Eye Detection AF] setting.
  4. Take the picture.

Caution

  • Subject eyes may not be detected correctly, depending on the subject and shooting conditions.

Note

  • To switch to [Eye Detection AF: Disable] without using menu operations, press the AF area selection button and then the INFO button. To switch to [Eye Detection AF: Enable], press the INFO button again.

Magnified View

To check the focus when the AF method is other than [Face+Tracking], magnify display by approx. 5× or 10× by pressing the Magnified view button (or tapping Magnify/Reduce).

  • Magnification is centered on the AF point for [Spot AF] or [1-point AF] and on the Zone AF frame for [Zone AF].
  • Autofocusing is performed with magnified display if you press the shutter button halfway when set to [Spot AF], and [1-point AF]. When set to AF methods other than [Spot AF] and [1-point AF], autofocusing is performed after restoring normal display.
  • With Servo AF, if you press the shutter button halfway in the magnified view, the camera will return to the normal view for focusing.

Caution

  • If focusing is difficult in the magnified view, return to the normal view and perform AF.
  • If you perform AF in the normal view and then use the magnified view, accurate focus may not be achieved.
  • AF speed differs between the normal view and magnified view.
  • Continuous AF and Movie Servo AF are not available when display is magnified.
  • With the magnified view, achieving focus becomes more difficult due to camera shake. Using a tripod is recommended.

AF Shooting Tips

  • Even when focus is achieved, pressing the shutter button halfway will focus again.
  • Image brightness may change during autofocusing.
  • Depending on the subject and shooting conditions, it may take longer to focus, or the continuous shooting speed may decrease.
  • If the light source changes as you shoot, the screen may flicker, and focusing may be difficult. In this case, restart the camera and resume shooting with AF under the light source you will use.
  • If focusing is not possible with AF, focus manually ().
  • For subjects at the edge of the screen that are slightly out of focus, try centering the subject (or AF point, or Zone AF frame) to bring them into focus, then recompose the shot before shooting.
  • With certain lenses, it may take more time to achieve focus with autofocus, or accurate focusing may not be achieved.

Shooting Conditions That Make Focusing Difficult

  • Subjects with low contrast, such as a blue sky or flat surfaces in solid colors, or other cases when highlight or shadow details are clipped.
  • Subjects in low light.
  • Stripes and other patterns where there is contrast only in the horizontal direction.
  • Subjects with repetitive patterns (Example: Skyscraper windows, computer keyboards, etc.).
  • Fine lines and subject outlines.
  • Under a light source whose brightness, color, or pattern keeps changing.
  • Night scenes or points of light.
  • The image flickers under fluorescent or LED lighting.
  • Extremely small subjects.
  • Subjects at the edge of the screen.
  • Strongly backlit or reflective subjects (Example: Car with a highly reflective body, etc.).
  • Near and distant subjects covered by an AF point (Example: Animal in a cage, etc.).
  • Subjects that keep moving within the AF point and will not stay still due to camera shake or subject blur.
  • Performing AF when the subject is very far out of focus.
  • Soft focus effect is applied with a soft focus lens.
  • A special effect filter is used.
  • Noise (dots of light, banding, etc.) appears on the screen during AF.

AF Range

The available autofocus range varies depending on the lens used and aspect ratio and whether you are using features such as Movie digital IS.


SIMS Doc Id

1592433103

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