The microphone brings me a dumpfere something kratzigere sound transmission than the original Mac. Is further not a problem because I can adjust the internal Micro of Macs program-specific and use continue. The AppStore available, free setup software from Logitech is not as the bearer. For normal operation it is also not required. I have at my workplace only laterally but chokes incident daylight and I have set the brightness to about 25%, so that nothing overridden. The setting can save you, but all will be lost if the shared programs are closed (I'm also not an expert).
So all in all a great replacement for the iSight. I'm very satisfied.