♪ Inspirational music playing ♪ Brett Harvey: I've been playing with cameras for 30 years. But I can't do that anymore. Because of my hands. Because of the tremors.And the first time I used Action mode was yesterday. Tap action. Tap record.[iPHONE STARTS RECORDING] It's the first time Dexter has ridden a bicycle. All I was thinking about was him riding the bike. I wasn't really thinking about what I was filming.Go on, my son. Go on. ♪ I've used cameras with stabilization, but it blows all of that out of the ...