David, I am glad to hear that a professional such as yourself uses the technique of pretending like your not recording. As someone who is a couple years new to videography this trick has worked a lot of times for me. Ill set up the shot, notice my subjects are looking at me filming them, so I then begin to act like im not recording, and they go back to acting normal…thus a great shot.
Megan, I too recommend, setting your camera on a tripod from a distance and zooming in, you can catch some beautiful candid moments without anyone knowing, then your cliens will love it when they see the video.