Open the camera settings in the pilot app.
At the bottom of the screen that opens up, there should be a "more"
Touch the "more" on the screen and one of the options presented should solve your problem.
For whatever reason, until I did the v1.1.9 firmware update on the Phantom, I couldn't see this dialog box - now I can. Prior to this adjustment, I think my camera angle was actually going just slightly up. If you looked at the indicator in the pilot app while moving the wheel (on the left side of the controller) you could see it going just beyond center. After the update and checking that option, my camera nows scrolls the additional 15-degrees for a total of 30-degrees beyond parallel.
Frankly I'm not sure what this is for. When the camera is angled up 30-degrees, the front props come heavily into view. I guess if it's not too severe, they can be cropped during video processing.
Mine will toggle to the additional 15 degrees but I have to turn the toggle back on every time I replace the battery, it never saves. I wish they had a configuration manager built in and kept the settings such as my RTH altitude.