There exists a type of photographer who can't quite get by with a pocketable compact, but also hesitates to commit to a full-size (and pricey) DSLR rig. This shooter is all too familiar with the superzoom -- and Sony's latest 30x model may just offer the perfect excuse for an upgrade. The 9.6-ounce device has earned the title of "world's smallest and lightest 30x optical zoom camera," which, judging by its spec sheet, is quite an achievement. There's a 24-720mm SteadyShot-