The `Humanitarian OpenStreetMap team <https://www.hotosm.org/>`_ has guidelines on `flying for UAV mapping <https://uav-guidelines.openaerialmap.org/>`_:
See also DroneDeploy's guide on `Making Successful Maps <https://support.dronedeploy.com/docs/making-successful-maps>`_, which provides great tips on mission planning.
Finally, lens distortion is a challenge in projects requiring accurate 3D data. See our section in these docs on `Camera Calibration <tutorials.html#calibrating-the-camera>`_.