Sony chose an unusual late Sunday timing for a sweeping update of some of its more important Cyber-shot cameras. The TX200V, WX50, and WX70 all have newer Exmor R CMOS sensors that help them shoot more effectively in low light. The TX200V, despite being the slimmest of the group, has a new very dense 18.2-megapixel sensor that can still minimize noise and can focus in a dark scene in 0.25 seconds, and half as much time in bright lighting.
