What is a Dual conversion gain (DCG)? Which Sensors support it?
Dual conversion gain (DCG) is a technology used in CMOS image sensors to improve image quality in low-light conditions. It converts the light that hits the sensor into two signals, one with a high gain and one with a low gain. The high-gain signal is used to capture more light in low-light conditions, while the low-gain signal is used to capture more detail in high-light conditions. The two signals are combined to create a single image with improved quality.
DCG is a relatively new technology but has quickly become a standard feature in many high-end camera sensors. It is one of the most effective ways to improve image quality in low-light conditions, and it is a key factor in the ability of modern cameras to take stunning photos in even the darkest of environments.
Here are some of the benefits of dual conversion gain:
- Improved image quality in low-light conditions
- Reduced noise
- Increased dynamic range
- Improved color reproduction
- Reduced read noise
- Improved signal-to-noise ratio
Dual conversion gain (DCG) is a technology many modern CMOS image sensors support. Some of the sensors that support DCG include:
- Sony IMX686
- Samsung GW1
- OmniVision OV64B
- Samsung ISOCELL GN1
- Sony IMX766
- Sony IMX789
- OmniVision OV50A
- Samsung ISOCELL JN1
- Sony IMX586
- OmniVision OV48C
DCG is also supported by some hardware platforms, such as the Qualcomm Snapdragon 8 Gen 1 mobile platform. This platform includes a built-in image signal processor (ISP) that supports DCG, which allows smartphones that use the Snapdragon 8 Gen 1 platform to take better photos in low-light conditions.
Dual conversion gain is a powerful technology that can significantly improve the image quality of CMOS image sensors. It is a key factor in the ability of modern cameras to take stunning photos in even the darkest of environments.
As DCG technology continues to advance, its widespread adoption is inevitable. This will allow a broader audience to capture stunning photos in low-light conditions, enriching visual storytelling.