The Olympus E-P3 (also known as the Olympus PEN, EP3 and EP-3) is the company's new flagship Micro Four Thirds camera, and offers a mountain of new changes and upgrades over the previous models. Have you ever had upgrader's envy? Most photographers often feel the need to upgrade when a brand new camera (or the successor to theirs) is announced. If you're already invested into the system, this may be the camera that you'll want to take a closer look at. If not, then perhaps you'll fancy the new 12mm f/2.0.