Sony Cybershot TX1 is one of the top of the line compact point-and-shoot from Sony and is one of the first digital cameras to boast a back-illuminated CMOS sensor which Sony called “EXMO R”. So what’s so special about this sensor? To make it short and easy, most sensors are designed with wirings at the front of the sensor photodiodes cutting off light passing through. With back-illuminated sensors, the wires are behind the photodiodes which makes them more sensitive in capturing light. With this increased light sensitivity the Cybershot TX1 boast impressive low-light and ISO performance for a compact point and shoot.