Readout noise includes pixelnoise, circuit noise, and ADC quantization noise. The lower the readout noise, the better. As can be seen, the readout noise of ASl662 is very low compared to CCD camera. The built-in HCG mode can effectively reduce the readout noise at high gain and allow the camera to maintain the same high dynamic range as it does at low gain.
When the gain is 252, the HCG mode is automatically turned on and the
dynamic range to 12bit.
