Solid-state imaging device and electronic apparatus

A solid-state imaging device comprising:

• a pixel unit configured to have a plurality of pixel groups, each of the pixel groups having four pixels;
• and
• wherein a first pixel of the four pixels transmits all wavelengths of incident light and a second pixel of the four pixels transmits a part of the all wavelengths of the incident light;
• wherein:
• an image luminance signal is generated by making use of signals output from the first and the third pixels, that is, said image luminance signal is generated from the first pixel in an illumination range with an upper limit thereof causing saturation of the first pixel whereas said image luminance signal is generated from the third pixel in an illumination range with a lower limit thereof causing said saturation of the first pixel;
• and one image is generated by synthesizing said image luminance signal generated from the first pixel with said image luminance signal generated from the third pixel;
• and
• wherein a third pixel is one of the four pixels and the third pixel transmit all wavelengths of incident light and has a lower transmittance than a transmittance of the first pixel, and further wherein an output from a saturation state determination circuit which determines a saturation state for the first pixel controls whether an output image is generated based on image information generated by the third pixel.