Use the LCD Monitor to preview images
by David Peterson
The LCD monitor will show you what your final image will look like. It won't be as large in size as your final image, but you will get enough of a feel for the image to know how your shot will turn out.
If your camera can show you a half second freeze of your shot just after you have taken it, turn this feature on. The half second will give you enough time to see if the image was well framed, and have the correct exposure or if you need to take another one.