Photography Tips and Tricks - 38 (How To Capture a Photo of The Road Runner)
Are you shooting a very fast animal or bird? If you are not comfortable with manual mode, then shutter priority is your friend. Set your shutter speed to at least 1/1000 and at least 3x your focal length. So, if you have a 600mm lens then start at 1/1800 or 1/2000. If you have a nifty-fifty, use 1/1000 as your base starting point.