I shoot with a Canon 5D Mark II and I always set my white balance on auto when I shoot a wedding.. but when I go home to edit the pictures I spend soo much time white balancing them. I find it especially time consuming with pictures taken inside the church. I'm starting to wonder if it is better to manually set the white balance? I've heard a lot of photographers keep it at 5000K all the time. One of my professors told me to always keep it on cloudy. I know the best way to do it is to hold out a grey card and set it accordingly everytime you are in a new lighting situation, but during a wedding I just don't see myself having time to do this.