How to set focus for camera on module v3

[yaomtc]

The libcamera-apps have this option:

 --lens-position                Set the lens to a given position <string>

Moves the lens to a fixed focal distance, normally given in dioptres (units of 1 / distance in metres). We have

• 0.0 will move the lens to the "infinity" position
• Any other number: move the lens to the 1 / number position, so the value 2 would focus at approximately 0.5m
• default - move the lens to a default position which corresponds to the hyperfocal position of the lens.

Is it possible to use this capability with speed-camera?

[pageauc]

In the file strmpilibcam.py you can add your setting in the appropriate location in the def init function I do not have a v3 camera. If you get things working then send me details and I could add as a variable that can be passed so it can be easily set in config.py Claude ...

On Mon, Aug 21, 2023 at 1:12 AM yao mtc @.***> wrote:

The libcamera-apps have this option:

--lens-position Set the lens to a given position

Moves the lens to a fixed focal distance, normally given in dioptres (units of 1 / distance in metres). We have

• 0.0 will move the lens to the "infinity" position
• Any other number: move the lens to the 1 / number position, so the value 2 would focus at approximately 0.5m
• default - move the lens to a default position which corresponds to the hyperfocal position of the lens.

Is it possible to use this capability with speed-camera?

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[pageauc]

Not sure if manual or auto focus would work best. Try

picam2.set_controls({"AfMode": controls.AfModeEnum.Manual,

"LensPosition": 0.0})

or Auto

 picam2.set_controls({"AfMode": controls.AfModeEnum.Continuous})

example in strmplibcam.py (cannot test)

    self.picam2.configure(self.picam2.create_preview_configuration(
                          main={"format": 'XRGB8888',
                          "size": size},
                          raw={"size":self.picam2.sensor_resolution},
                         "AfMode"=controls.AfModeEnum.Continuous,
                          transform=Transform(vflip=vflip,
                                              hflip=hflip)))

let me know results. Also try manual.

On Mon, Aug 21, 2023 at 7:03 AM Claude Pageau @.***> wrote:

In the file strmpilibcam.py you can add your setting in the appropriate location in the def init function I do not have a v3 camera. If you get things working then send me details and I could add as a variable that can be passed so it can be easily set in config.py Claude ...

On Mon, Aug 21, 2023 at 1:12 AM yao mtc @.***> wrote:

The libcamera-apps have this option:

--lens-position Set the lens to a given position

Moves the lens to a fixed focal distance, normally given in dioptres (units of 1 / distance in metres). We have

• 0.0 will move the lens to the "infinity" position
• Any other number: move the lens to the 1 / number position, so the value 2 would focus at approximately 0.5m
• default - move the lens to a default position which corresponds to the hyperfocal position of the lens.

Is it possible to use this capability with speed-camera?

— Reply to this email directly, view it on GitHub https://github.com/pageauc/speed-camera/issues/136, or unsubscribe https://github.com/notifications/unsubscribe-auth/ABNPKZGKJDGZA6OQKQFSWWDXWLU2PANCNFSM6AAAAAA3X2F3BI . You are receiving this because you are subscribed to this thread.Message ID: @.***>

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[pageauc]

You could also just try adding the focus code as a separate line per first email below main self.picam2

eg self.picam2.configure(self.picam2.create_preview_configuration( main={"format": 'XRGB8888', "size": size}, raw={"size":self.picam2.sensor_resolution}, transform=Transform(vflip=vflip, hflip=hflip))) self.picam2.set_controls({"AfMode": controls.AfModeEnum.Continuous}) # Set Auto focus self.picam2.start()

On Mon, Aug 21, 2023 at 7:34 AM Claude Pageau @.***> wrote:

Not sure if manual or auto focus would work best. Try

picam2.set_controls({"AfMode": controls.AfModeEnum.Manual,

"LensPosition": 0.0})

or Auto

 picam2.set_controls({"AfMode": controls.AfModeEnum.Continuous})

example in strmplibcam.py (cannot test)

    self.picam2.configure(self.picam2.create_preview_configuration(
                          main={"format": 'XRGB8888',
                          "size": size},
                          raw={"size":self.picam2.sensor_resolution},
                         "AfMode"=controls.AfModeEnum.Continuous,
                          transform=Transform(vflip=vflip,
                                              hflip=hflip)))

let me know results. Also try manual.

On Mon, Aug 21, 2023 at 7:03 AM Claude Pageau @.***> wrote:

In the file strmpilibcam.py you can add your setting in the appropriate location in the def init function I do not have a v3 camera. If you get things working then send me details and I could add as a variable that can be passed so it can be easily set in config.py Claude ...

On Mon, Aug 21, 2023 at 1:12 AM yao mtc @.***> wrote:

The libcamera-apps have this option:

--lens-position Set the lens to a given position

Moves the lens to a fixed focal distance, normally given in dioptres (units of 1 / distance in metres). We have

• 0.0 will move the lens to the "infinity" position
• Any other number: move the lens to the 1 / number position, so the value 2 would focus at approximately 0.5m
• default - move the lens to a default position which corresponds to the hyperfocal position of the lens.

Is it possible to use this capability with speed-camera?

— Reply to this email directly, view it on GitHub https://github.com/pageauc/speed-camera/issues/136, or unsubscribe https://github.com/notifications/unsubscribe-auth/ABNPKZGKJDGZA6OQKQFSWWDXWLU2PANCNFSM6AAAAAA3X2F3BI . You are receiving this because you are subscribed to this thread.Message ID: @.***>

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[yaomtc]

"AfMode"=controls.AfModeEnum.Manual,"LensPosition": 0.0,
^
SyntaxError: expression cannot contain assignment, perhaps you meant "=="?

Then when I try the focus code as a separate line:

    self.picam2.set_controls({"AfMode":controls.AfModeEnum.Continuous}) # Set auto focus
NameError: name 'controls' is not defined

[pageauc]

I don't have a camera with focus. You can try referencing the picamer2 libcamera documentation. This should be a good source of information. https://datasheets.raspberrypi.com/camera/picamera2-manual.pdf Also take a look at the github examples https://github.com/raspberrypi/picamera2/tree/main/examples

Modify speed camera local copy of strmpilibcam.py (you may want to save a backup copy of original)

https://github.com/pageauc/speed-camera/blob/master/strmpilibcam.py

Insert test camera code as a separate line in the def init just before the self.picam2.start() line

Also be aware that picamera2 python lib is still in Beta

I would appreciate an update on your testing.

Best Wishes Claude ...

On Tue, Aug 29, 2023 at 6:01 PM yao mtc @.***> wrote:

"AfMode"=controls.AfModeEnum.Manual,"LensPosition": 0.0, ^ SyntaxError: expression cannot contain assignment, perhaps you meant "=="?

Then when I try the focus code as a separate line:

self.picam2.set_controls({"AfMode":controls.AfModeEnum.Continuous}) # Set auto focus

NameError: name 'controls' is not defined

— Reply to this email directly, view it on GitHub https://github.com/pageauc/speed-camera/issues/136#issuecomment-1698203865, or unsubscribe https://github.com/notifications/unsubscribe-auth/ABNPKZFAGLZPR4IMEWQ4BR3XXZRCTANCNFSM6AAAAAA3X2F3BI . You are receiving this because you commented.Message ID: @.***>

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[pageauc]

Take a look a picamera2 manual page 29 in focus section 5.2 Examples show focus code after camera start so you might try that also make sure space are ok since that sometimes makes a difference.

On Tue, Aug 29, 2023 at 7:26 PM Claude Pageau @.***> wrote:

I don't have a camera with focus. You can try referencing the picamer2 libcamera documentation. This should be a good source of information. https://datasheets.raspberrypi.com/camera/picamera2-manual.pdf Also take a look at the github examples https://github.com/raspberrypi/picamera2/tree/main/examples

Modify speed camera local copy of strmpilibcam.py (you may want to save a backup copy of original)

https://github.com/pageauc/speed-camera/blob/master/strmpilibcam.py

Insert test camera code as a separate line in the def init just before the self.picam2.start() line

Also be aware that picamera2 python lib is still in Beta

I would appreciate an update on your testing.

Best Wishes Claude ...

On Tue, Aug 29, 2023 at 6:01 PM yao mtc @.***> wrote:

"AfMode"=controls.AfModeEnum.Manual,"LensPosition": 0.0, ^ SyntaxError: expression cannot contain assignment, perhaps you meant "=="?

Then when I try the focus code as a separate line:

self.picam2.set_controls({"AfMode":controls.AfModeEnum.Continuous}) # Set auto focus

NameError: name 'controls' is not defined

— Reply to this email directly, view it on GitHub https://github.com/pageauc/speed-camera/issues/136#issuecomment-1698203865, or unsubscribe https://github.com/notifications/unsubscribe-auth/ABNPKZFAGLZPR4IMEWQ4BR3XXZRCTANCNFSM6AAAAAA3X2F3BI . You are receiving this because you commented.Message ID: @.***>

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[UnderpantsGnome]

Hi @pageauc Just in case this comes up again, this article has some good info in it, and this is all I needed to change to get it to work.

diff --git a/strmpilibcam.py b/strmpilibcam.py
index 7765a44..d8f95b2 100644
--- a/strmpilibcam.py
+++ b/strmpilibcam.py
@@ -2,6 +2,7 @@
 # Import required libraries
 from picamera2 import Picamera2
 from libcamera import Transform
+from libcamera import controls
 import time
 from threading import Thread

@@ -38,6 +39,10 @@ class CamStream:
                               raw={"size":self.picam2.sensor_resolution},
                               transform=Transform(vflip=self.vflip,
                                                   hflip=self.hflip)))
+
+        #self.picam2.set_controls({"AfMode": controls.AfModeEnum.Continuous, "AfSpeed": controls.AfSpeedEnum.Fast})
+        self.picam2.set_controls({"AfMode": controls.AfModeEnum.Manual,"LensPosition": 12.0})
+
         self.picam2.start()
         time.sleep(2) # Allow camera time to warm up

[pageauc]

Thanks for the update. I will try adding options for pi cam module 3 focus with settings in config.py Have ordered V3 cam module + another RPI5. Should arrive Fri. Will do some testing when it arrives.

On Tue, Apr 23, 2024 at 6:13 PM Michael Moen @.***> wrote:

Hi @pageauc https://github.com/pageauc Just in case this comes up again, this article https://www.tomshardware.com/how-to/raspberry-pi-camera-module-3-python-picamera-2 has some good info in it, and this is all I needed to change to get it to work.

diff --git a/strmpilibcam.py b/strmpilibcam.py index 7765a44..d8f95b2 100644--- a/strmpilibcam.py+++ b/strmpilibcam.py@@ -2,6 +2,7 @@

Import required libraries

from picamera2 import Picamera2 from libcamera import Transform+from libcamera import controls import time from threading import Thread @@ -38,6 +39,10 @@ class CamStream: raw={"size":self.picam2.sensor_resolution}, transform=Transform(vflip=self.vflip, hflip=self.hflip)))++ #self.picam2.set_controls({"AfMode": controls.AfModeEnum.Continuous, "AfSpeed": controls.AfSpeedEnum.Fast})+ self.picam2.set_controls({"AfMode": controls.AfModeEnum.Manual,"LensPosition": 12.0})+ self.picam2.start() time.sleep(2) # Allow camera time to warm up

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