The default Persp camera has the connections to the sky and exposure node, the new camera doesn't. Expand the mental ray section of the new camera attibutes shape tab, pop open hypershade and drag and drop the sky onto the environment channel and the exposure simple onto the lens channel.

I could've sworn there was an update camera connections button in the camera attributes but I'm not sure if that'll be there on the new camera and. I'm kinda stuck on an iPad at the moment.