Now that Zoom participation has, well, zoomed during the pandemic, decent webcams have become scarcer and more expensive — but millions of people already have digital cameras far superior to most webcams.
Most can connect to computers to transfer photos and video, but live video output from most DSLR or mirrorless cameras is not in a streaming format.
Not to worry.
At least six of the world's biggest camera companies offer FREE software to turn their products into very high quality webcams. Below are the links. You're welcome.
Nikon
https://www.nikonusa.com/en/learn-and-explore/webcam-utility.page
Fuji
https://www.youtube.com/watch?v=wrU0TKKHLTM
Panasonic
https://www.panasonic.com/global/consumer/lumix/lumix_webcam_software.html
Sony
https://www.theverge.com/2020/10/15/21517673/sony-imaging-edge-webcam-digital-camera-webcam-software-mac
GoPro
https://gopro.com/en/us/news/how-to-use-gopro-for-webcamOly
Olympus
https://www.cnet.com/how-to/how-to-turn-your-olympus-camera-into-a-webcam-for-your-mac/