The Sony Cybershot DSC-RX100 M4 Digital Camera is a versatile and advanced point-and-shoot featuring a large 20.1-megapixel 1" Exmor RS CMOS sensor to produce high-resolution still imagery and 4K video. This sensor's construction utilises a stacked backside-illuminated design to improve clarity and image quality when working in dimly-lit conditions as well as to increase its sensitivity to a native ISO 12,800. By completely placing the camera's photodiodes over the sensor's processing structure, the light-gathering ability of the Exmor RS CMOS sensor is further improved over previous backside-illuminated devices and faster image processing capabilities are added as well. 16 fps of continuous shooting is made possible as well as UHD 4K movie recording with the option of Super Slow Motion frame rates of up to 960 fps. Also benefitting the performance of this sensor is the BIONZ X image processor, which helps to produce images with smooth quality and tonal gradations.