Sony Corp announced a compact digital camera equipped with a large-size backside illuminated (BSI) CMOS image sensor June 27, 2013.
The company will release the camera, "Cyber-shot DSC-RX100M2," July 5, 2013. Though there is no manufacturer's suggested retail price, the expected retail price of the camera is ¥75,000 (approx US$759).
As in the case of the "Cyber-shot DSC-RX100," which Sony announced in June 2012, the image sensor of the new camera has a size of 1.0 inch and a pixel count of 20.2 million. The largest difference between the two cameras is that the RX100M2 comes with a BSI CMOS sensor. But the company will continue to sell the RX100.
BSI CMOS sensors are becoming the mainstream in the field of compact digital cameras. But the size of the largest BSI CMOS sensor has been about 1/1.7 inch. And the RX100M2 is the world's first compact digital camera equipped with a BSI CMOS sensor that is as large as 1.0 inch, Sony said.
By employing the backside illumination structure, it became possible to efficiently apply light to the light-receiving area. And the sensitivity of the RX100M2 is about 40% higher than that of the RX100, Sony said. As a result, the company drastically reduced noise and enabled to take pictures with the maximum ISO sensitivity of 12,800 while the ISO sensitivity of the RX100 is 6,400.