Hi,
I have been thinking of shelling out some money for the high-end 600 RT flash. One big use for this would be as fill light at my little girls soccer games. The games are always at 11 o'clock in the morning so the sun is nearly overhead. Even when I have the sun at my back if she is looking down at the ball her face is often shadowed.
Obviously I can't shoot soccer within the one 180th second flash limit for my camera. I wonder if I could use high speed sync but still get enough power to do the job. It is peewee soccer so a lot of the action is actually fairly close to the camera.
I have also thought about just taking a big silver reflector with me. The only problem with that would be needing the sun to be in the right place to reflect properly. It generally would not be.
Any opinions on the high-speed sync question?