The human eye is the equivalent of 576 megapixels, according to Gizmodo. The calculation is not entirely accurate because the eye is more like a video stream than a still camera, notes Dr. Roger Clark, a scientist and photographer.
Because most people have two eyes, the brain combines the signals to further increase the effective resolution, notes Clark, who has worked on NASA missions. The human eye can see 576 megapixels on its own without enhancement by the brain. Healthy human eyes can adjust to low levels of light better than most cameras. As of 2014, human eyes can also see a range of contrast that is much greater than any camera available.