I am shooting indoor volleyball with my Nikon D40 with Tamarac 80-300mm telephoto lens. My problem is that even in daylight and the gym lights on, the lighting combined with the lens makes it very difficult to get clear action shots without blur. Are there better settings for my camera or shooting techniques that will give me more better quality photos? I have the camera set at Aperture priority mode, f-4.5, ISO 800, white balance set on incandecant lighting. Are there any ideas out there?