that something else happens to fall under one of the AF points and is also more contrasty than your main subject. In these instances, switch AF mode to Center AF, point the AF Frame on your subject and half-press the shutter release button to lock focus on your main subject, then reframe, if necessary, before fully pressing the shutter release button to take the shot.

Macro Setting

http://drscavanaugh.org/digitalcamera/macro.htm

While you can use a digital camera at the standard settings, you can often see much more detail by using the macro setting on the camera. A macro setting changes the focus of the camera so it can focus on very close objects. The macro setting is for photographing objects within a few inches or feet away. One of my digital cameras has a macro setting that works within one centimeter, to get very close shots (light can be an issue when you get that close). You can use the macro setting to improve your ability to see small details, similar to using a magnifying glass. You might want to use a small tripod to hold the camera steady. I also find that an active display screen is the easiest to use, since you don't have to estimate which portion of the viewfinder is focusing for the macro setting. Don't forget to change away from the macro setting when you are finished (if the camera doesn't do it automatically). People who wear bifocals especially should be careful to remember to change the camera setting back to normal when finished with macro, as it may appear out of focus when looking at the LCD screen with the glasses. If the camera is set at macro and you are trying to take a normal picture then the focus will be set wrong and the image will be out of focus. I know of one teacher who took a few pictures up close on the macro setting, and then forgot to change back to the normal setting, and she used up the rest of her camera memory space with the pictures all out of focus.

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Camera Shake

If your digital camera makes even a slight movement when you take a picture, the chance of having a blurred photo increases. To help minimize camera shake, take a few moments to learn under what conditions it can happen as well as the ways to help prevent, if not completely eliminate, it.

Camera shake typically happens in low- light situations when the digital camera aperture is wide-open, or when using a long telephoto lens. The best way to prevent camera shake is to mount your camera on a tripod or other flat, level support. When using a tripod, if you don't have a remote, use the self-timer to trigger the shutter button.

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FujiFilm FinePix E550 manual Camera Shake, Http//drscavanaugh.org/digitalcamera/macro.htm