Solid-state imaging device and camera

A camera, comprising:

• a solid-state imaging device;
• an optical system configured to lead incident light to a photoelectric conversion element included in the solid-state imaging device;
• and
• a signal processing circuit configured to process output signals from the solid-state imaging device;
• wherein the solid-state imaging device includes a group of elements, the group of photoelectric conversion elements including color photoelectric conversion elements configured to convert light signals in first, second, and third wavelength ranges to electric signals, respectively, a white photoelectric conversion element configured to convert light signals in a wavelength range including an entire visible light range and a portion of an infrared light range to electric signals, and a light-shielded diode element configured to be shielded from light, and
• wherein a unit is formed by including a white photoelectric conversion element and a light-shielded diode element for one color photoelectric conversion element, and within the unit, the white photoelectric conversion element is electrically connected with the light-shielded diode element by way of an overflow path.