Need to be pushed from the 60d to the 7d or over the cliff...

Keith Z Leonard wrote:

Shutter priority would have worked too if you set your speed a lot higher, I think. You still run the risk of the camera selecting some crazy aperture/ISO combo if you are in auto-ISO. If the lighting changes as you are shooting here I would use M+auto ISO personally. Set aperture to f5.6-f8 and shutter somewhere pretty high, 1/500-1/800.