QML Camera element aperture and shutterSpeed properties return incorrect values

Using the Qt SDK 1.1 Beta, create a new QML application project.

To the project's .pro file, add

CONFIG += mobility
MOBILITY += multimedia
symbian:TARGET.CAPABILITY += UserEnvironment

In main.qml, write

Camera {
    id: cam
    MouseArea {
        anchors.fill: parent
        onClicked: {
            cam.searchAndLock()
            console.log(cam.aperture + " " + cam.shutterSpeed)
            cam.captureImage()
        }
    }
}

Launch the application on a N8 PR1.1 and tap on the camera viewport.

Actual result:
Aperture and shutterSpeed always return 0.

Expected result:
Aperture and shutterSpeed should return the values currently active in the camera. In fact, the values should continuously update even when the camera is not in "focused" state or about to capture an image.