My 14yo will be testing for her black belt in Taekwondo in a couple of weeks. The school requested parent volunteers for taking stills and videos and of course my wife volunteered me. I have done such events before, but purely in a personal way with no one else's happiness depending upon my results. Here is the setup: the testing will take place in a multipurpose hall which is about 35x60 feet in dimension. From my recollection, it is lit by fluorescent overhead lights and one of the shorter walls is frosted glass. I can find out how the hall will be set up for the event. The school has requested that the cameras be setup on tripods and if possible be controlled remotely so that people are not standing/moving too much. Not clear where the tripods can be placed. Also, no flash. I have a choice of stills (which I am comfortable with) or video (which I could manage). Now my questions: Normally, I would to shoot S-mode and high burst with S-AF with my E-M10. Can I use the Olympus app? The little bit I played with it, I was not impressed. Any other thoughts on how I may do this? I could use the video on my E-M10 or I can rent a GH4. I realize that the GH4 will be much better in terms of quality and 4K and all that, but what is my learning curve? FWIW, I have not used a Lumix camera in over 10 years. Lenses: I was thinking that my 25 and 45 should be adequate depending upon where I am in the room since we are looking for full body movement shots. But I can rent the P12-35 and/or the P35-100 if necessary. Any thoughts? Appreciate any and all help people can give. To give you a sense of the lighting and kind of action, here are a couple of recent shots. This is an image from last years school show with the teacher breaking concrete blocks while holding an egg in his hand. E-M10 + O40-150R. 1/400, ISO 3200. Cropped. This was at a much bigger venue. This one is from a preliminary test earlier this year. Again a different venue (and a poorly located photographer). E-M10 + O25. 1/400 ISO 640. Cropped. White balance was tricky.