SIGMA DP3 Quattro - Manual (Page 54)

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FACE DETECTION AF MODE
The dp3 Quattro offers Face Detection AF Mode that prioritizes to detect
and focus on the faces in the image.
Normal AF mode can be switched to Face detection AF mode by selecting
[ Capture Settings] (P.27) → [Face detection AF] → [On].
OFF ON
Press button and button to set the Face
Detection AF Mode ON/OFF.
A Face Detection Frame will appear in
orange once faces are detected in the
display.
Press the shutter button halfway, and the
Face Detection Frame will turn green once
it is properly focused on the face.

When the Face Detection Mode is in operation, AE Metering Mode will be
set to “Measuring” and focus on the detected faces in the image.

It is possible to detect up to 8 faces at one time in an image, and the Face
Detection Frame will appear on the closest face in the display.
CAUTION !!

Face Detection AF Mode is unavailable when it is set in MF Mode.

Face Detection AF Mode may not work well in the following conditions;
•
When a part of the face is covered by sunglasses, a hat, etc.
•
When the person is facing away from the camera.
•
When it is out of focus.
•
When the object is either too close or too far.

When it does not detect faces well, it will switch to focus by the selected
Focus Frame.

To return to normal AF mode, select [ Capture Settings] (P.27) →
[ Face detection AF] → [Off].