I've done photography for several redwood weddings, but never any video. I have one more coming in November. The couple will hire me regardless, but sent an extra email asking if I could do video of ceremony, or whether they need to hire a videographer. Their budget is very small, already cutting into their moving-over-seas fund for the wedding. It came to mind that I could set up my extra camera (Canon 5D Mk iii or 5DS) on a tripod pointed at them and the officiant while I take photos. If I do this, I want to get a microphone.
Any suggestions for microphone, whether wireless lav, or shotgun mike? Usually is very quiet. Breeze sound is often 250 to 300 ft overhead and sounds like the ocean if there's even any wind. And an occasional raven once in a while. So ambient sound is minimal.
I'm also curious about using a small mixer with a combination of lav PLUS shotgun. And I'm also wondering if a lav microphone placed on the groom or officiant will pick up all three voices clearly.