The issue is probably the dynamic range of the sensor or film. Our eyes are incredibly sensitive to brightness and not very sensitive to color, so as a result,

The issue is probably the dynamic range of the sensor or film. Our eyes are incredibly sensitive to brightness and not very sensitive to color, so as a result, we are kinda good at seeing things with different illumination very well and the brain corrects in the color if it's missing it (in fact, most of your vision is black-and-white being colored in by your brain). Cameras on the other hand have one sensor that is only color and not black and white. And with low brightness, noise becomes a huge problem with the electronics. The modern smartphone sensors is incredibly small and even moderate lighting conditions already require some post processing or special capturing methods like HDR to cook up an acceptable image. The issue is most likely fixable by making HDR a standard feature on all cameras and extending the dynamic ranges even further so that darker skin tones are appropriately captured in all lighting conditions.