Disappointing as I expected much more for the relatively high price.
However, you can readjust the lens, when you open the device: [...]
Unlike the C910 covers the microphones are, however, again with two screws additionally secured from below to have to come to this one, however, remove the label on the bottom. Thank you Logitech!
The included software does not, however, one can easily upload on the net is not convincing - as I'm used to from this manufacturer of keyboards, mice and remote controls.
If someone has a good webcam for taking landscape in use, I'd appreciate a note as a comment. Thanks!
The C920 is now in the electronic waste, at least to stand I will separate and pick up the device, which is in fact quite good (camera thread).