Canon Eos 77D Setting Auto Focus

The Canon Eos 77D Setting Auto Focus.  AF points in the viewfinder are arranged to make AF shooting suitable for a wide variety of subjects and scenes. You can also select the AF operation and drive mode that best match the shooting conditions and subject.

Canon Eos 77D Setting Auto Focus
Canon Eos 77D AF: Changing the Autofocus Operation

You can select the AF (autofocus) operation characteristics to suit the shooting conditions or subject. In Basic Zone modes, the optimum AF operation is set automatically for the respective shooting mode.
  1. Set the lens’s focus mode switch to <AF>.
  2. Turn the Mode Dial to a Creative Zone mode.
  3. Press the <AF> button. [AF operation] will appear.
  4. Select the AF operation. Press the <L> <R> keys to select the desired AF operation, then press <set>.
  5. Focus on the subject. Aim the AF point over the subject and press the shutter button halfway. The camera Canon Eos 77D will then autofocus in the selected AF operation.

Canon Eos 77D One-Shot AF for Still Subjects

Suited for still subjects. When you press the shutter button halfway, the Canon 77D will focus only once.
  1. The AF point that achieves focus is displayed, and the focus indicator in the viewfinder will also light up.
  2. With evaluative metering, the exposure setting will be set at the same time focus is achieved.
  3. While you hold down the shutter button halfway, the focus will be locked. You can then recompose the shot if desired.
  4. If focus cannot be achieved, the focus indicator in the viewfinder will blink. If this occurs, the picture cannot be taken even if the shutter button is pressed completely. Recompose the shot and try to focus again.
  5. If [53: Beep] is set to [Disable], the beeper will not sound when focus is achieved.
  6. After achieving focus with One-Shot AF, you can lock the focus on a subject and recompose the shot. This is called “focus lock”. This is useful when you want to focus on a peripheral subject not covered by the Area AF frame.
  7. When a lens equipped with an electronic manual focusing function is used.

AI Servo AF for Moving Subjects

This AF operation is suited for moving subjects when the focusing distance keeps changing. While you hold down the shutter button halfway, the canon will keep focusing on the subject continuously.
  1. The exposure is set at the moment the picture is taken.
  2. When the AF area selection mode is set to Automatic selection AF, focus tracking will continue as long as the Area AF frame covers the subject. 
With AI Servo AF, the beeper will not sound even when focus is achieved. Also, the focus indicator <set> in the viewfinder will not light up.

AI Focus AF for Switching the AF Operation Automatically

AI Focus AF switches the AF operation from One-Shot AF to AI Servo AF automatically if a still subject starts moving.
  1. After the subject is focused in One-Shot AF, if the subject starts moving, the eos 77D will detect the movement, change the AF operation automatically to AI Servo AF, and start tracking the moving subject.
When focus is achieved with AI Focus AF with the Servo operation active, the beeper will continue beeping softly. However, the focus indicator in the viewfinder will not light up. Note that focus will not be locked in this case.

AF Points Lighting Up in Red

By default, the AF points light up in red when focus is achieved in low light conditions or on a dark subject. In Creative Zone modes, you can set whether to have the AF points light up in red when focus is achieved

AF-Assist Beam with the Built-in Flash

Under low-light conditions, when you press the shutter button halfway, the built-in flash may fire a brief burst of flashes. This illuminates the subject to help auto focusing

Selecting the AF Area and AF Point

The camera has 45 AF points for autofocusing. You can select the AF area selection mode and AF point(s) suiting the scene or subject. Depending on the lens used, the number of usable AF points, AF point patterns, Area AF frame shape, etc. vary.

Canon Eos 77D AF Area Selection Mode

You can select one of four AF area selection modes.
Canon Eos 77D Setting Auto Focus
1. Single-point AF (Manual selection)
  • Select one AF point to focus.
2. Zone AF (Manual selection of zone)
  • One of nine focusing zones is used to focus.
3. Large Zone AF (Manual selection of zone)
  • One of three focusing zones (left, center, and right) is used to focus.
4. Automatic selection AF
  • The Area AF frame (entire AF area) is used to focus

Canon Eos 77D Selecting the AF Area Selection Mode

Canon Eos 77D Setting Auto Focus
1 Press the <AF start> or <AF poin selection> button.
  • Look through the viewfinder and press the <AF selection> button.
2 Press the <playback> button.
  • Each time you press the <playback> button, the AF area selection mode changes.

Canon Eos 77D Selecting the AF Point Manually

You can manually select the AF point or zone.
1 Press the <AF area selection> button.
  • The AF points will be displayed in the viewfinder.
  • In the Zone AF mode or Large Zone AF mode, the selected zone will be displayed.
2 Select an AF point.
  • You can select an AF point in horizontal direction with the <main dial> dial or vertical direction with the <quick control> dial.
  • If you press <set>, the center AF point (or center zone) will be selected.
  • In the Zone AF mode, turning the <main dial> or <quick control> dial will change the zone in a looping sequence.
  • You can also select an AF point or zone in horizontal direction with the <L> <R> keys or vertical direction with the <up> <down> keys.

AF Point Display Indications

Pressing the <AF poin> button lights up the AF points that are cross-type AF points for high-precision auto focusing. The blinking AF points are horizontal-line or vertical-line sensitive.
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