The obstacle to this achievement has been that until the instant of exposure, an SLR's reflex mirror bounces incoming light into the viewfinder -- far from the image sensor, which in the E-330's case is a 7.5-megapixel CMOS-type. Olympus's ingenious solution, made possible by the ever-falling price of silicon chips, is to place a second sensor within the viewfinder path. Borrowed from a Stylus point-and-shoot, this tiny eight-megapixel CCD doesn't provide the eyepiece image, as in a camera with an electronic viewfinder; it's used only to create a live view on the E-330's 2.5-inch external LCD screen. Because this screen can swivel up or down -- a feature found on some bigger point-and-shoots -- the E-330 can be used for accurate low- or high-angle shooting. By comparison, the existing E-300 has a 1.8-inch fixed-position LCD, and of course no "live view" feature.