What is the Shutter Release Button For anyway?

Most of us think we point the camera and push the shutter release button and everything should be fine. What you may not realize is that on most digital camera's the shutter release has two functions. The shutter Release of course, and it is also for locking your focus. You get the scene you want and the focus you want press your shutter release 1/2 way down and hold it and crop your picture and then when you are ready press it the last 1/2 way down to take the picture. Pressing the shutter release 1/2 way down holds the focus you have achieved as long as you hold it partially down. This can save you the frustration of poorly focused pictures. Read your user manual carefully for better instructions.