Mystery Solved - but not the problem it self
After doing some investigative work, I came up with a method to test the FaceTime camera.
Since I could not believe Apple actually went through trouble changing the hardware (the camera) I tested it.
Using the same camera at same time but using two different app on my MBA this is the result.
I know the left one is in reverse but that is not the point.
The point is that the right one is much better clarity (resolution).
So what did I do ?
Using FaceTime (on the left) and using QuickTime (on the right) at same time I took a screen shot above, while keeping the text at about normal distance from the camera.
This proves the problem with FaceTime resolution is confirmed but it is a software problem not hardware.
Apple made a mistake somwhere with the Facetime.app not using the full capability of the build in camera.
Lets hope Apple fixes that in next software release.