These are the issues I had to deal with when I tried hooking up my Sony A7 II to my Mac through an Elgato Gaming CamLink. I just wanted 1080p from my fancy camera as a webcam through OBS so I could…
Cam Link Pro — First Time Installation and Set Up (Video) – Elgato
Original Elgato Cam Link 4K;External Camera Capture Card,Stream and Record with DSLR,Camcorder,ActionCam as Webcam in 1080p60 - AliExpress
OBS Link – Setup – Elgato
Configuring an Elgato CamLink on a Mac for OBS, by Yuval Greenfield
How to get started with OBS Studio in macOS
Elgato CAM LINK 4K, OBS Live Stream With Four Cameras
Elgato Cam Link Pro, Internal Camera Capture Card with 4 HDMI inputs, Stream and Record 1080p60 or 4K30 for Video Conferencing, Teaching, Streaming, Broadcasting on OBS, Zoom, Teams with Multicam, PC
Content Libraries; OBS Studio Virtual Camera
Elgato's Cam Link turns your DSLR into a souped-up webcam
Elgato Game Capture HD60 X — Set Up in OBS Studio on macOS – Elgato
Configuring an Elgato CamLink on a Mac for OBS, by Yuval Greenfield