When you have the GoPro in multi-shot mode does it always shoot the pictures in 4:3? I was trying to figure out how to make the pictures 16:9 but it seems you can't do that. Am I wrong here and missing something?
I don't believe GoPro has that setting for the still shots. You can correct in post editing, but this can be painful without the correct software. I use Lightroom, and you can crop and adjust one photo and then copy the edits from that photo to all the photos from the shoot with easy selection tools.