你这个解释得非常好,提高Conversion gain 一方面提高了sensitivity,一方面导致dynamic range 变小。所以有的sensor 有dual conversion gain 技术。
The High Conversion Gain (HCG) allows the acquisition of images with better quality under low light conditions. ... Conversely, the Low Conversion Gain mode (LCG) is used under bright illumination conditions, being realized by lowering the conversion gain of the pixel.30 Aug 2017