With point and shoot cameras apparently now up against a megapixel wall, manufacturers are focusing on adding quirky new features to keep you hooked on the upgrade cycle. Sony's new Cyber-shot TX55 includes several such additions, such as 'amazing' 3D image capture, 'extremely low' noise, and a new digital zoom technology called By Pixel Super Resolution, which promises to double the camera's 5x optical zoom range while still capturing 16.2-megapixel images at full quality. We're a bit skeptical about that last one, but if the $350 camera really can deliver on its promise, then we may just have a winner. Sony says there's also high-speed autofocus that can lock onto subjects in 0.1 second
