How many megapixels does the human eye have?
According to scientist and photographer Dr. Roger Clark, the resolution of the human eye is 576 megapixels. That's huge when compared to the 12-megapixel camera in an iPhone 7. But what does that really mean?Is the human eye really analogous to a camera?
A resolution of 576 megapixels means that to create a display with an image so sharp and clear that you can't distinguish individual pixels, you would need to pack 576 million pixels into an area the size of your field of view. To get his number, Dr. Clark assumes optimal visual acuity throughout the visual field; That is, your eyes are assumed to be moving in the scene in front of you. But at a snapshot-size glance, the resolution drops to a fraction of that: around 5 to 15,
megapixels.That's because your eyes have many flaws that would be unacceptable on camera. You only see high resolution in a very small area in the center of your vision called the fovea. You have a blind spot where your optic nerve meets your retina. Not only do you move your eyes around a scene to take in more information, you also correct those imperfections in your visual system.
The Wrong Question
Really, but the megapixel resolution of your eyes is the wrong question.The eye is not a camera lens that takes snapshots to store in its memory. It's more like a detective, gathering clues from your surroundings and then bringing them back into your brain to piece the pieces together into a complete picture. Surely there is a screen resolution at which our eyes can no longer distinguish pixels, and according to some it already exists, but when it comes to our daily viewing experience, talking in megapixels is too easy.
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