Olympus has announced what it calls the world’s smallest and lightest 600mm equivalent telephoto lens in the shape of M.ZUIKO DIGITAL ED 75-300mm 1:4.8-6.7. Weighing 430 grams, the Micro Four Thirds system lens' 18 element, 13 group design utilizes two Extraordinary Dispersion (ED) and 3 High Refractive (HR) glass elements to reduce chromatic aberration. It promises fast and silent focusing for recording movies. The lens will be available in black and silver from December 2010