My FaceTime HD Camera (Built-in) is not detected anymore. Logitech C310 HD Webcam System Requirement does not include MacOS meaning the web camera may not be compatible or work with Macs.
As for Video Calls, it states "You’ll get HD 720p video calling on most major instant messaging applications". I wonder if anyone has used the C310 to overcome a failed Face Time camera issue (in that I can use it to make FaceTime calls with the C310).