Maintaining Focus and Exposure on Moving Human Subjects with Servo AF

When the [Servo AF] mode is set to [On], the focus and exposure are continuously adjusted on human subjects while the ⋖ Shutter Button ⋗ is being pressed halfway. Using the [Servo AF] mode together with the [Face AiAF] function, you can shoot moving human subjects with optimal focus and exposure.

Caution

The camera may not be able to focus in some conditions.

If a correct exposure cannot be obtained, the shutter speed and aperture value display in orange. Release your finger from the ⋖ Shutter Button ⋗, then press it again halfway.

You cannot shoot with the AF lock in this mode.

[AF-Point Zoom] in the Shooting tab () of the ⋖ MENU ⋗ () is not available.

Not available in Self-Timer.

The following explanations are provided based on the assumption that the [Shooting Mode] is set to [Program AE] ().

[Servo AF] is not available in the following modes.

- [AUTO]* (), [Fireworks] (), [Stitch Assist] (), [Movie] ()

* When the face of a moving subject is detected and an icon that indicates motion (such　as or , etc.) appears in the upper right of the LCD monitor, [Servo AF] is automatically set to [On].

Setting [Servo AF]

1. Press the ⋖ Power ⋗ button on the camera.

2. Press the ⋖ MENU ⋗ () button.

3. The following screen appears.

Operate the ⋖ directional buttons ⋗ to select the [Shooting] tab ().

Operate the ⋖ directional buttons ⋗ to set [Servo AF] to [On].

After making these settings, press the ⋖ MENU ⋗ () button.

4. Then, set [AF Frame] to [Face AiAF].

For details on how to set [Face AiAF], please refer to the information at the following links.

Setting the AF frame (Set the AF frame to Face Detect)

- PowerShot SD940 IS / DIGITAL IXUS 120 IS / PowerShot S90

- PowerShot SX20 IS

- PowerShot G11

Shooting with the [Face AiAF] function

5. Point the camera at a person.

A white frame () appears over the detected face.

6. Press the ⋖ Shutter Button ⋗ halfway.

The [AF Frame] appears over the detected face.

If the face is not detected, the [AF Frame] appears in the center of the screen.

7. Keep the ⋖ Shutter Button ⋗ pressed halfway down.

Even if the human subject moves, the focus and exposure is automatically readjusted.

8. Press the ⋖ Shutter Button ⋗ fully to shoot.