attached you will find two photos I have taken, exposure manually.
I have taken these with a Sony RX-100 and as you can see the sky is overexposed while the landscape is exposed "alright". I was wondering if I am doing something wrong with the exposure or if the dynamic (do you call it that?) of the Sony RX-100 (or better the chip) is just not good enough to capture a cloudy sky (the sun was behind the clouds, no direct sunlights).

Any help would be appreciated.

http://s2.postimg.org/igb2br57d/DSC01826.jpg

http://s2.postimg.org/g928a3ajd/DSC01837.jpg