Instead of carrying a camera with you next time out, pick up one of the Bushnell Radar guns for under $100 and check it out. I've had one for years and it is very accurate. I've used it in many situations and can tell you that you can see the speed of a baseball, tennisball, cars....
They are pretty cool and you can see the speed of just about anything. I won't tell you how fast a coyote or deer can run, but I've clocked them and was impressed.
http://www.amazon.com/dp/B0002X7V1Q/ref=...two=&hvqmt=
