I'm surprised by the number of youtube videos out there where there is all kinds of bs going on below 10,000, hard to believe.
In any event, use an old style digital camera instead of a cell phone (remember those?). Some of these older cameras still take better pics anyway because they are dedicated to the task.
Mount them if you can.
And of course only use them below 10,000 if you are on a 91 maintenance or repo flight.