In order to utilise the cameras highest potential, you will be required to change the "Preview size" in your camera settings.
Please follow the instructions below to do this:
1. Open the camera app and hit the Settings icon in the bottom left hand corner of the screen.
2. Touch the icon that resembles a camera in the middle of this window. Down the bottom you will see an option called "Preview size".
Please see the following photo for an example of this screen: https://images.kogan.com/image/fetch/s--suEfNfJ_--/f_auto,q_auto:best/http://i.imgur.com/fhTblEl.png
3. Tap this option and select "Standard (4:3)".
From there, you will be able to utilise the full 8 megapixels of the Agora's camera.