I do hitting instruction and some scouting and often film ballplayers at major league ballparks. I am having two problems that I haven't been able to fix.
1. In some cases, greys will have a blue tint to them when shooting at night. This isn't a big deal, but I'd like to fix it. It may be that I need to get a white balance card. However, the issue is that the lighting changes over the course of the game as the sun sets. I guess I may need to re-balance several times during the night. However, the challenge is that I'm often shooting from a position with different lighting than is on the field.
2. I have bigger image problems when filming during the day, particularly when shooting from a heavily shaded position. The image often gets very harsh and contrast-y and the color balance is off, with reds turn orange. I also have some problems when shooting right next to shadowed areas, as when the shadow is just about to cross the plate. The auto-focus often has a very hard time getting the focus right. Any suggestions would be appreciated.