Not using continuous drive mode

While you might expect the single shot drive mode to be a perfectly good choice for general photography, the continuous low or continuous high options can be more effective at giving you sharper, more timely results. With single shot, not only can the action of pressing down and releasing the shutter release produce soft results, but taking your finger fully off the shutter release can cause the camera to refocus the lens – although you can get round this by configuring the camera so that the AF function is removed from the shutter release.