Casio Exilim EX-Z4U
4.0 megapixels (effective); 3x optical zoom/4x digital zoom; auto and manual focus; program exposure only; JPEG file format; ISO range 50-400; proprietary Lithium-Ion battery; no movie mode. Includes docking cradle
Though the Casio Exilim EX-Z4U is barely bigger than a credit card (its 0.9-inch width excluded), it offers a 3x optical zoom, 2" LCD screen, and 4-megapixel resolution. Casio's Exilim line of cameras is well-known for its tiny dimensions, and the Z4U is no exception -- measuring just 3.43" (W) x 2.24" (H) x .93" (D), this camera can slide into a pocket almost unnoticed. While the Z4U's size is undoubtedly its greatest selling point, its impressive images and the included camera docking station both help make this tiny Casio an appealing choice for casual snapshooters.