Packed inside the stylish black metal body of the Mju 1020 is a 10-megapixel CCD imager that is only marginally larger than the sensors in the 8-megapixel Mju 840 and Mju 850 SW models, although we don't have its actual dimensions. While the difference in maximum output file sizes between the Mju 1020 and its 'sisters' is relatively small (3648 x 2736 pixels in the 1020 vs 3248 x 2436 pixels in the other models) Olympus is asking a lot from this tiny imaging chip.
The Mju 1020 is claimed as the smallest compact camera with 7x optical zoom and its body weighs only 135 grams and measures only 25.2 mm thick. Its lens tucks into the camera body and has a focal length range of 6.6mm to 46.2 mm, which equates to 37-260mm in 35mm format. Its maximum aperture is f/3.5 at the wide setting and f/5.3 at the tele end, which isn't particularly fast. A Dual Super Aspherical (DSA) lens element allows such a small lens to cover such a long zoom range. Read the whole review here.