I agree with the other poster - I think your problem is motion blur rather than focus - if you have a decent lens (one of the "pro" lenses, rather than kit) the

I agree with the other poster - I think your problem is motion blur rather than focus - if you have a decent lens (one of the "pro" lenses, rather than kit) the focus is very fast, smooth and does well in low light for both Nikon and Canon.