Sleek and diminutive, the Casio Exilim EX-S100 is one of a handful of ultra slim zoom cameras. Offering a 3.2 megapixel resolution and a 2.8X optical zoom that folds neatly into a space less than 1.42 cm (0.56 inch), the EX-S100 is a camera that can literally be carried anywhere. The Casio EX-S100 is entirely metal-clad, and even its external controls have a metallic surface. On the front, the design provides for the flash, and a microphone which is behind a tiny hole near the lower left of the lens trim. And, when retracted, the lens is flush to the front surface and its front element is covered by a metal shutter.