Samsung is taking the next step in resolution for smartphone cameras. The company has introduced a CMOS sensor with 64 megapixels, which will be used in the first half of the second half of the year. A new 48-megapixel model is also being unveiled today. Both models support pixel binning.
So far, 48 megapixels were the maximum in Samsung's portfolio of sensors for smartphone cameras. The Isocell Bright GW1 baptized new sensor comes to 64 megapixels, which can be retrieved in very good lighting in full resolution, while for situations with poor lighting, a pixel binning to 16 megapixels is provided. Four pixels form the basis for a pixel in this mode and can thus capture more light.
Pixel area quadruples
The GW1 is equipped with pixels with an edge length of 0.8 microns, according to Samsung, it is currently the smallest pixel size on the market. Although Samsung achieves a very high resolution on a comparatively small surface, as in this case of 64 megapixels, Samsung's sensors are at a disadvantage as soon as the lighting conditions worsen compared to sensors such as the Sony IMX363 with a pixel size of 1.4 μm. This is where pixel binning takes effect, resulting in pixels with a doubled edge length of 1.6 μm at a quadruple area due to the merger. Samsung calls pixel-binning Tetracell technology.
In parallel with the GW1, Samsung has introduced the Isocell Bright GM2 with 48 megapixels, which also masters pixel binning, which in this case results in images with 12 megapixels.
Both sensors are capable of dual-conversion gain (DCG), which allows the size of the charge storage of each pixel to be switched so that at low ISO values there is a large charge storage to minimize photon noise, while at high ISO values a smaller charge storage should reduce the readout noise. The technology is well detailed by Michael Hussmann docma explained.
Installed in smartphones in the second half of the year
GW1 and GM2 are currently in the sampling phase and will transition to mass production for use in smartphones in the second half of the year.