Use of external cameras with QField Windows

[berniefritsch]

Describe the issue

I wonder if it is possible to use an external camera (like DSLR from Canon, Nikon, Sony etc.) with QField Windows. By installing software like 'Canon EOS Webcam Utility Software' (https://www.canon.de/cameras/eos-webcam-utility/) or similar tools from other companies it is possible to use DSLR cameras for services like Zoom, WebEx or the native Windows camera app. But I could not get it working in QField for Windows.

Reproduction steps

Steps to reproduce the behavior:

1. Webam Utilty software installed
2. Connect the camera with USB-C to the computer (controlled functionality in the Windows camera app)
3. Deactive all other cameras in the device manager, so there is only the external camera recognized in Windows
4. Open QField Windows
5. By opening the photo widget I only see a black screen and the buttons to take a photo etc.

Expected behavior

Passing through the live image from the camera and the possibility to take pictures with that camera within QField

Observed behavior

No live image, nothing happens by clicking on the trigger button

Screenshots and GIFs

Desktop (please complete the following information)

• OS: Windows 10 Pro
• QGIS Version 3.30
• QFieldSync Version 4.6.3

Mobile (please complete the following information)

• Canon R 10
• EOS Webcam Utility
• QField Windows: 3.1.3. - Borneo (14a225 v3.1.3), Qt 6.6.1

Additional information

• Problem started happening recently, didn't happen in an older version of QField: No
• Problem can be reliably reproduced, doesn't happen randomly: Yes
• Problem happens with all files and projects, not only some files or projects: Yes

[nirvn]

@berniefritsch , thanks Bernhard. I think this will be something worth highlighting upstream. The problem is either with the windows drive or Qt.