flinken64

One issue could be turbulence around your head/camera. When belly flying the position of the arms could cause turbulence (with and without wings), depending on how you fly. Are you shooting belly formations (on top) or fun jumps at level? Free flying head’s up (sit) you should get most of the lift from your back to get clean air around your head (in head’s down or back flying you normally get clean air, since all body parts are out of the airflow around the head). /Flinken