
To get a sharp image when hand-holding the camera, a useful rule of thumb is that the minimum shutter speed should be set to one over the focal length of the lens. So if you have a 250mm lens for wildlife or sports photography, the minimum shutter speed you can hand hold the camera is 1/250 of a second, and even then you need a steady hand. New tripods and heads help you get sharp images without sacrificing the framing freedom of hand-held shots.