TIP: To lock focus for a set of pictures, let the camera find the best focus using the Normal Focus setting, then switch to Manual Focus. The focus will then be locked at that distance until you adjust it manually or switch to another focus setting.
Using Zoom
The more you zoom in on the subject of your picture, the more that small movements of the camera are magnified (this is called camera shake). So, especially at full telephoto zoom (3x), you must hold the camera steady in order to take a picture that is not blurry. If an icon of a shaking hand 
appears in the Live View screen when the Shutter button is pressed halfway down, you are moving the camera or the scene needs more light; the picture will likely be blurry. Try holding the camera closer to your body or against a steady object, or set the camera on a tripod or stable surface. Also try turning on the flash or turning on lights to add more light to the scene.
TIP: Increasing ISO Speed can help reduce camera shake, but can result in increased noise in your images (see ISO Speed on page 78).
44 HP Photosmart R717 User’s Manual