I know this is a old post, but since I'm having some issues, .

I drag the script below from "CameraFocusController.zip" in unity and then an error message appears: Member 'FocusMode.FOCUS_MODE_CONTINUOUSAUTO' cannot be accessed with an instance reference qualify it with a type name instead.

Please help!

thanks a lot

using UnityEngine;

using System.Collections;

using Vuforia;

public class CameraFocusController : MonoBehaviour {

    private bool mVuforiaStarted = false;

    void Start ()

    {

        VuforiaBehaviour vuforia = (VuforiaBehaviour)FindObjectOfType(typeof(VuforiaBehaviour));

        if (vuforia != null)

            vuforia.RegisterVuforiaStartedCallback(StartAfterVuforia);

    }

    private void StartAfterVuforia()

    {

        mVuforiaStarted = true;

        SetAutofocus();

    }

    void OnApplicationPause(bool pause)

    {

        if (!pause)

        {

            // App resumed

            if (mVuforiaStarted)

            {

                // App resumed and vuforia already started

                // but lets start it again...

                SetAutofocus(); // This is done because some android devices lose the auto focus after resume

                // this was a bug in vuforia 4 and 5. I haven't checked 6, but the code is harmless anyway

            }

        }

    }

    private void SetAutofocus()

    {

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

        {

            Debug.Log("Autofocus set");

        }

        else

        {

            // never actually seen a device that doesn't support this, but just in case

            Debug.Log("this device doesn't support auto focus");

        }

    }

}

Unbelievable. It just worked.

Thanks a bunch. Grazie mille.

Hello @blawson75,

@DanielRubins is correct in that ARCore does not currently support continuous auto-focus. This was an issue similar to ARKit when it was first released, so our expectation is that ARCore will eventually support it.

Note that Vuforia Fusion will attempt to select the best provider (ARKit, ARCore) depending upon the device. I don't see where the LG V10 is listed on ARCore supported devices. Check logging as Vuforia messages should indicated if ARCore is being used or not - you can also use our new currentFusionProvider() API to do the same.

Regardless, Vuforia only calls native OEM APIs to control the camera. Thus, if an OEMs autofocus implementation for a device is not performant, Vuforia will exhibit the same behavior.

Thanks,

Vuforia Engine Support

If you're using vuforia 7.2.2+ with Vuforia Fusion and you've got ARCore activated with it, this may cause a problem as ARCore has no camera focus functionality built in yet. At least that's the problem I've had recently.

Still not working for me.  Using Unity 2018.1.9f1 Personal ... Vuforia Engine v7.2.23 .. LG V10 ... Android 6.0

Camera never focuses on anything in the app. 

To this day still a magical fix... THANK YOU!

Thank you so much, thats work for me :D

Thank you so much, thats work for me :D

I know this is a old post, but since I'm having same issues, I will leave here a important topic.

Don't forget to put:

Using Vuforia;

at the begining of your code.

i got error . i'm using unity 5.4.1

Hi there!

How this is supposed to work on Vuforia 2017.2?

I drag the script to ARCamera and its not working.

Thanks,

Fábio

Perfect ! Merci !!

(focus for an app, on tablette lenovo 3, works perfectly after build)

Many thanks- this was a really simple fix to my first Vuforia build via Unity to Android. Thanks again.

This did it for me, many thanks!

HI Guys

This is reply to my previous post.

(Yes. Camera Focus mode not working in Unity 2017.1.1f1. Camera is not focusing on night time. Works fine in day light.

Anybody resolved the problem let us know.)

In Unity 2017.1.1f1 also the script is working. We need to drag the script to AR Camera => Camera in Hierarchy. Then it will focus. ( Earlier I forgot to do that).

I have attached the image file for your reference.

Yes. Camera Focus mode not working in Unity 2017.1.1f1. Camera is not focusing on night time. Works fine in day light.

Anybody resolved the problem let us know.

The focus script seems to not work in 2017.1.1f1.

Had it work once, stopped App (samsung S7) re-launched and  focus stopped. Any suggestions?

Thank you!

Many thanks

good job!

Many thanks, its worked well!

two thumbs

regard

The script from "CameraFocusController.zip" seems to work well and tested on Unity5.6.

Thank you for sharing the workable solution. Cheers! 

Gracias, funciono perfecto :D

SHAAANKYUUUUUUUUU

Thankyou, its work for me . thankyou thankyou.

Hi Priyamdey. 

You saved my time, thanks a lot dude.

Hi!

If it still not working make sure that under Vuforia Configuration, the Camera Device Mode is set to MODE_DEFAULT.

For us only this solved the problem! :)

Regards,

evoAR

Thanks! You saved the day!!

Funciona perfecto GRACIAS!!!

Ojala pues en las próximás  versiones no se les olvide colocar este simple scrip 

Okay. So, I have my Unity version as 5.4.1 (Personal Edition), Vuforia version as 6.2.6. Attach the "CameraFocusController.cs" script (in the zip file) to ARCamera. Now it will be able to autofocus.

Please write the code entirely autofocus

I have no such this lines

(((

Guys, read the updates from Vuforia for the changes made to Vuforia 6.2 (Including the RegisterVuforiaStartedCallback problem).

https://library.vuforia.com/articles/Training/Changes-to-the-Unity-ARCamera-with-Vuforia-6-2

https://library.vuforia.com/articles/Solution/Migrating-Unity-Projects-to-Vuforia-6-2

You just need to change one line in the script provided by mrduncan - 

Change this line - 

VuforiaBehaviour vuforia = (VuforiaBehaviour)FindObjectOfType(typeof(VuforiaBehaviour));

to this line -

VuforiaARController vuforia = VuforiaARController.Instance;

and I think it will work properly.

Thanks

me too too

me too :(

I updated Vuforia to the last version.. and it happend to me too...

Hello everyone,

after changing to Vuforia Video Playback, the CameraFocusController.cs is not working anymore.

Ihave an error message here, in code line cs:(14,21):

 vuforia.RegisterVuforiaStartedCallback(StartAfterVuforia);

This is the error message:

Assets/Scripts/CameraFocusController.cs(14,21): error CS1061: Type `Vuforia.VuforiaBehaviour' does not contain a definition for `RegisterVuforiaStartedCallback' and no extension method `RegisterVuforiaStartedCallback' of type `Vuforia.VuforiaBehaviour' could be found (are you missing a using directive or an assembly reference?)

Does anyone already solved this problem?

thank you in advance.

Cheers

You're fantastic KaranGoel! Perfect, easy to follow instructions. Worked like a charm.

Hello everyone.

Since I had a similar problem, and since that problem has been solved by following the instructions mentioned in the previous comments, I would like to thank the people.

In addition, I would like to add the step by step process to do it for people still trying to figure it out.

1. I am supposing that you are making a basic AR App using Vuforia in Unity.

2. I am supposing that you have already followed all the basic steps to make a normal AR App (with the focusing problem).

3. Select ARCamera. On selecting it, you can see the Inspector Window (probably on the right side).

4. Go to the extreme bottom. There is a "Add Component" button. Press it.

5. Go to the extreme bottom of the new Window that opened after you pressed Add Component. There will be a "New Script" option. Click it.

5. Then add a file by the name "CameraFocusController".

6. A new tab appears in the Inspector Window. Edit the script in the new tab.

7. Code is provided in the attachment that you can find in the comment by mrduncan(probably) in the same post.

Did it work? I have been using a very very similar script for my app in Vuforia 6, but it doesn't work once the app has been paused and resumed - the camera just goes blurry until you restart the app

Thank you very much for this! Super helpful :)

Ideally you want to wait for Vuforia to finish initializing before sending it calls. In many cases it won't matter, but as you build up your code in a complex project...eventually you'll get a timing issue.

I've attached the completed file. You just need to attach it, to anything. 

Hi There, 

"

Put this in your ARCamera script, in the Start function :

bool focusModeSet = CameraDevice.Instance.SetFocusMode(CameraDevice.FocusMode.FOCUS_MODE_CONTINUOUSAUTO);

if (!focusModeSet)

{

Debug.Log ("Failed to set focus mode to continusauto (unsupported mode).");

} 

"

For clarity, which ARCamera script are you referring to?  

Hello.

Put this in your ARCamera script, in the Start function : 
 

Hello!
Thanks a lot for the help!
I maybe gonna need a little bit more of help, I try to create a C# Script to put that info, and then attach to the ArCamera in the Unity proyect. 
But when i try to create the script i got tons of erros that i dont really know how to solve ( im doing all this via tutorials, i almost know nothing of C#) 
Maybe if you could be a little more specific , again , thanks a lot for take the time to help me and answer me, and sorry for my little knowledge!

CameraDevice myCam = CameraDevice.Instance;

myCam.SetFocusMode(CameraDevice.FocusMode.FOCUS_MODE_CONTINUOUSAUTO);

Hope it helps !!