Wingardium Leviosa

These 2 boys had been sizing each other up for a few minutes as we passed down the track. There was a brief flinch as the one on the right jumped up then returned to the standoff, but i thought it gave me an idea where the next jump would take place. Sadly, the leap was higher and I only  managed to catch it as he passed out of frame, but I was surprised this was in focus!