Casio on Thursday ventured into compact but high-zoom cameras with the advent of the EX-H10. The 12.1-megapixel point-and-shoot is centered on a 10X, 24-240mm equivalent that both permits long range as well as wide-angle shots up close. Its battery is as much of a strong point: through a combination of increased capacity and power-saving refinements, the H10 can last for about 1,000 shots before