41Basic OperationThe shutter button has two steps. You can press the shutter buttonhalfway. Then you can further press the shutter button completely.Pressing halfwayThis activates autofocusing and theautomatic exposure system that sets theshutter speed and aperture.The exposure setting (shutter speed andaperture) is displayed in the viewfinderand on the LCD panel (0).Pressing completelyThis releases the shutter and takes thepicture.Preventing Camera ShakeHand-held camera movement during the moment of exposure is calledcamera shake. It can cause blurred pictures. To prevent camera shake,note the following:• Hold and steady the camera as shown on the preceding page.• Press the shutter button halfway to autofocus, then slowly press theshutter button completely.Shutter ButtonIn Creative Zone modes, pressing the <p> button is the same aspressing the shutter button halfway.If you press the shutter button completely without pressing it halfway first,or if you press the shutter button halfway and then press it completelyimmediately, the camera will take a moment before it takes the picture.Even during menu display, image playback, or image recording, you caninstantly go back to shooting-ready by pressing the shutter buttonhalfway.