AV Foundation camera preview layer gets zoomed in, how to zoom out?

Question

The application currently I am using has a main functionality to scan QR/Bar codes continuously using Zxing library (http://code.google.com/p/zxing/). For continuous frame c

Answer 1

I am answering my own question again. This was not answered even in Apple Dev forum, therefore I directly filed a technical support request from Apple and they have replied that this is a known issue and will be fixed and released with a future version. So there is nothing we can do more than waiting and see.