Canon EOS Rebel T1i EOS REBEL T1i/EOS 500D Instruction Manual - Page 37

Basic Operation Shutter Button The shutter button has two steps. You can press the shutter button halfway. Then you can further press the shutter button completely. Pressing halfway This activates autofocusing and automatic exposure metering that sets the shutter speed and aperture. The exposure setting (shutter speed and aperture) is displayed in the viewfinder. (0) Pressing completely This releases the shutter and takes the picture. Preventing Camera Shake Camera movement during the moment of exposure is called camera shake. Camera shake can cause blurred pictures. To prevent camera shake, note the following: • Hold and steady the camera as shown on the previous page. • Press the shutter button halfway to autofocus, then press the shutter button completely. If you press the shutter button completely without pressing it halfway first or if you press the shutter button halfway and then press it completely immediately, the camera will take a moment before it takes the picture. Even during the menu display, image playback, and image recording, you can instantly go back to shooting-ready by pressing the shutter button halfway. 37