The Olympus E-300 / Olympus Evolt E-300 is the second digital SLR camera based on the FourThirds System. The Olympus E-300 / Olympus Evolt E-300 is an 8 megapixel DSLR that looks a little unusual - Olympus have replaced the traditional pentaprism with a TTL Optical Porro Finder, which uses a horizontal viewfinder with four mirrors instead of a prism and enables the camera to have a more compact flat profile



Link: Photographyblog