In general, the LCD monitors built into digital SLR cameras are for viewing pictures taken, and not for viewing and framing in real-time. With the OLYMPUS E-SYSTEM, you can actually view and shoot your frame from the LCD monitor with Live View. There are 2 major benefits for using Live View.

1. Easing photography at angles that make the use of the traditional optical view finder difficult.
2. Allows you to see a preview of the picture before you actually shoot.

And so on.