When you configure your webcam to work in Zoom you generally do so in one of two ways.
The first way is the standard setup, through the app tweaks.
By default, your webcam image is actually slightly zoomed in.
Enabling HD forces your webcam into using the highest available 16:9 resolution your webcam supports.
To be able to configure these options, it’s crucial that you go into Zooms tweaks.
To do so, press your user icon in the top-right corner, then press configs.
To access Zooms controls, press your user icon, then on controls in the dropdown menu.
Once in the controls, switch to the Video tab.