Set the layer's orientation to the camera. You'll find the setting at the bottom of the layer transform properties.
Read up on Animating the camera and 3D layers in the help files. The section is short and covers this and a lot of other issues.
Thanks a lot! Is there a way to make this default? On other versions I didn't have to do this and I didn't even need to have a camera. It's going to get quite annoying doing this for every layer.
Just opened up CS6 again and noticed that it's exactly the same. Weird. I always remember it orienting to the default after effects camera without me having to do anything. It's definitely like this at my college.
your essentially parenting the file to your camera though, If you have any other animation going on it will mess you up. Its more realistic the other way.
What you're seeing is perfectly normal behaviour, and would always have happened in previous versions of AE as well.
The only time you won't see natural perspective like this is if you're using an orthographic camera, such as the "Front" view in the main viewer. Perhaps you were inadvertently using Front view in the previous version of AE. While orthographic cameras can be quite useful, they don't exist in the real world, and your 3D work won't look very 3D with it activated.