While Windows itself does not have a built-in setting to set a default camera across all applications, most video-calling and recording software offer the option to select your preferred camera within their settings. Before joining a call or recording, check the application’s settings or preferences section where you can usually find the option to choose your default camera from the ones connected. It's a good practice to configure this setting in each app you commonly use for video calls to ensure it's always ready with your preferred camera.