Hi, 

I had this app that was made in an older vrsion of Vuforia. Now I am using the newest version of Vuforia and in the script CammeraSettings.cs I had to make some changes because the the front camera activation is not supported anymore. 

I made the necessary changes but now the camera is out of focus and I cannot fins why.

Here is the script:

using UnityEngine;

using System.Collections;

using Vuforia;

public class CameraSettings : MonoBehaviour

{

    #region PRIVATE_MEMBERS

    private bool mVuforiaStarted = false;

    private bool mAutofocusEnabled = true;

    private bool mFlashTorchEnabled = false;

    private CameraDevice.CameraDeviceMode mActiveCamera = CameraDevice.CameraDeviceMode.MODE_DEFAULT;

    #endregion //PRIVATE_MEMBERS

    #region MONOBEHAVIOUR_METHODS

    void Start()

    {

        var vuforia = VuforiaARController.Instance;

        vuforia.RegisterVuforiaStartedCallback(OnVuforiaStarted);

        vuforia.RegisterOnPauseCallback(OnPaused);

    }

    #endregion // MONOBEHAVIOUR_METHODS

    #region PUBLIC_METHODS

    public bool IsFlashTorchEnabled()

    {

        return mFlashTorchEnabled;

    }

    public void SwitchFlashTorch(bool ON)

    {

        if (CameraDevice.Instance.SetFlashTorchMode(ON))

        {

            Debug.Log("Successfully turned flash " + ON);

            mFlashTorchEnabled = ON;

        }

        else

        {

            Debug.Log("Failed to set the flash torch " + ON);

            mFlashTorchEnabled = false;

        }

    }

    public bool IsAutofocusEnabled()

    {

        return mAutofocusEnabled;

    }

    public void SwitchAutofocus(bool ON)

    {

        if (ON)

        {

            if (CameraDevice.Instance.SetFocusMode(CameraDevice.FocusMode.FOCUS_MODE_CONTINUOUSAUTO))

            {

                Debug.Log("Successfully enabled continuous autofocus.");

                mAutofocusEnabled = true;

            }

            else

            {

                // Fallback to normal focus mode

                Debug.Log("Failed to enable continuous autofocus, switching to normal focus mode");

                mAutofocusEnabled = false;

                CameraDevice.Instance.SetFocusMode(CameraDevice.FocusMode.FOCUS_MODE_NORMAL);

            }

        }

        else

        {

            Debug.Log("Disabling continuous autofocus (enabling normal focus mode).");

            mAutofocusEnabled = false;

            CameraDevice.Instance.SetFocusMode(CameraDevice.FocusMode.FOCUS_MODE_NORMAL);

        }

    }

    public void TriggerAutofocusEvent()

    {

        // Trigger an autofocus event

        CameraDevice.Instance.SetFocusMode(CameraDevice.FocusMode.FOCUS_MODE_TRIGGERAUTO);

        // Then restore original focus mode

        StartCoroutine(RestoreOriginalFocusMode());

    }

    /* public void SelectCamera(CameraDevice.CameraDirection camDir)

     {

         if (RestartCamera(camDir))

         {

             mActiveDirection = camDir;

             // Upon camera restart, flash is turned off

             mFlashTorchEnabled = false;

         }

     }*/

    public void SelectCamera(bool boolean)

    {

        if (RestartCamera(boolean))

        {

            // Upon camera restart, flash is turned off

            mFlashTorchEnabled = false;

        }

    }

    public bool IsFrontCameraActive()

    {

        return true; // because now CameraDirection does not exist and it will always use back camera as front camera is not supported anymore

        //return (mActiveDirection == CameraDevice.CameraDirection.CAMERA_FRONT);

    }

    //public bool RestartCamera(CameraDevice.CameraDirection direction)

    public bool RestartCamera(bool boolean)

    {

        ObjectTracker tracker = TrackerManager.Instance.GetTracker<ObjectTracker>();

        if (tracker != null)

        {

            tracker.Stop();

        }

        CameraDevice.Instance.Stop();// stops the camera

        CameraDevice.Instance.Deinit();// initialaizes de camera again

        //if (!CameraDevice.Instance.Init(direction))

        if (!CameraDevice.Instance.Init())

            {

            Debug.Log("Failed to init camera for direction: "/* + direction.ToString()*/);

            return false;

        }

        if (!CameraDevice.Instance.Start())

        {

            Debug.Log("Failed to start camera for direction: " /*+ direction.ToString()*/);

            return false;

        }

        if (tracker != null)

        {

            if (!tracker.Start())

            {

                Debug.Log("Failed to restart the Tracker.");

                return false;

            }

        }

        return true;

    }

    #endregion // PUBLIC_METHODS

    #region PRIVATE_METHODS

    private void OnVuforiaStarted()

    {

        mVuforiaStarted = true;

        // Try enabling continuous autofocus

        SwitchAutofocus(true);

    }

    private void OnPaused(bool paused)

    {

        bool appResumed = !paused;

        if (appResumed && mVuforiaStarted)

        {

            // Restore original focus mode when app is resumed

            if (mAutofocusEnabled)

                CameraDevice.Instance.SetFocusMode(CameraDevice.FocusMode.FOCUS_MODE_CONTINUOUSAUTO);

            else

                CameraDevice.Instance.SetFocusMode(CameraDevice.FocusMode.FOCUS_MODE_NORMAL);

        }

        else

        {

            // Set the torch flag to false on pause (because the flash torch is switched off by the OS automatically)

            mFlashTorchEnabled = false;

        }

    }

    private IEnumerator RestoreOriginalFocusMode()

    {

        // Wait 1.5 seconds

        yield return new WaitForSeconds(1.5f);

        // Restore original focus mode

        if (mAutofocusEnabled)

            CameraDevice.Instance.SetFocusMode(CameraDevice.FocusMode.FOCUS_MODE_CONTINUOUSAUTO);

        else

            CameraDevice.Instance.SetFocusMode(CameraDevice.FocusMode.FOCUS_MODE_NORMAL);

    }

    #endregion // PRIVATE_METHODS

}