Imaging device and exposure control method for imaging device

An imaging device comprising:

• a sensor that is color coded by using high-sensitivity pixels having higher sensitivity to incident light than chromatic color pixels;
• and
• an automatic exposure function that allows the imaging device to control exposure according to illuminance in an imaging environment,
• wherein an algorithm in the automatic exposure function that determines a reference color in a level diagram according to the illuminance uses green pixels, which are the chromatic color pixels, as the reference color in a standard illuminance region where the gain of the sensor is set to a minimum.

An exposure controlling method for an imaging device, the imaging device including:

• a sensor that is color coded by using high-sensitivity pixels having higher sensitivity to incident light than chromatic color pixels;
• and
• an automatic exposure function that allows the imaging device to control exposure according to illuminance in an imaging environment,
• wherein an algorithm in the automatic exposure function that determines a reference color in a level diagram according to the illuminance uses the high-sensitivity pixels as the reference color in a low illuminance region where the gain of the sensor is set to a maximum,
• while using green pixels, which are the chromatic color pixels, as the reference color in a standard illuminance region where the gain of the sensor is set to a minimum.