Can we set the auto focus window in the imx219 8mp?

Raspberry Pi Cameras 8mp-imx219-v2-cameras
1

How can we set autofocus window settings on the IMX-219 8MP camera? I have tried to do it using “–autofocus-window 0.25,0.25,0.5,0.5”, but there is no effect on the focus.

I could crop the video image using “–roi 0.25,0.25,0.5,0.5”, and this worked.

Helpful suggestions are appreciated. Thanks in advance.

2

Hi,
Are you using a imx219 camera module with a autofocus lens?

3

Yes, camera-module with lens autofocus.

4

Hi,
Upon reviewing the source code, I discovered that this camera does not support the PDAF function, meaning it does not support “autofocus-windows.” If you are eager to have this function, I recommend choosing a camera that supports PDAF.

5

Okay. Thank you so much for your support.

7

Hello Dion,

I bought this camera: Arducam 12MP IMX708 Autofocus Camera Module.

Could you please tell me which tuning file I should use for the motorized autofocus? The continuous autofocus is not working with the current imx708.json tuning file. Thanks in advance.

8

Hi，
What command did you use to test the autofocus function of this camera module?

9

I used libcamera-vid command with --autofocus-mode as continous and also tried using --keypress “f”. the tuning file I used is /usr/share/libcamera/ipa/rpi/vc4/imx708.json

10

Hello Dion, do you have any suggestions?

11

Hi,
I wanna know if the autofocus mode worked as expected.

12

Hi Dion,

I can say that the autofocus mode in continuous is working, but it’s not completely correct. It’s not focusing on nearby objects very quickly. Whenever I change the resolution or ROI, the camera tries to focus and sets the default autofocus lens position to 12 (macro) or 15 (normal). Am I using the correct tuning file and algorithm?

13

Hi @VishalVijayan
How nearby it is?

Do you want a fixed focus distance?

14

nearby: 5 to 10 cm.

Do you want a fixed focus distance?
No, I want to control focus using both ways(deafult option): continous and mannual.

15

Hi,
The focus distance of B0312 is 10cm to infinity. That makes sense that the image is out of focus between 5 - 10cm.

You are using the correct tuning file and algorithm. And you should find that the autofocus speed of the camera is fast when it is trying to focus an object.