

The other thing that might matter for some people is the c922's ability to do 720p60. In contrast, the c922 just uses windows UVC settings, and also has absolutely no problem with multiple cameras connected, even without the G Hub software.

the G Hub beta software works around this now though, and for this camera, I recommend it (mainly to preserve settings across restarts). Also, until recently, these custom drivers resulted in it being very difficult to manage more than one c920 connected to the computer, since the drivers don't differentiate between them. There are no extra features here, just a different UI. The c920 relies on the Logitech software, so it has its own custom UI to control zoom, focus, exposure/gain, etc. The "Carl Zeiss" glass thing doesn't matter - you're not going to see any real difference in color shift or focus between the two. The c922 is essentially a firmware hack to allow some specific features, and does away with the need for Logitech drivers. The c920 and c922 use the same sensor and hardware.
