If peoples eyes were cameras, how many megapixels would they have?

Question

If peoples eyes were cameras, how many megapixels would they have?

Answer 1

About 60 i think

Answer 2

5 million billion gazillion

Answer 3

Star from me.  Very beautiful question.

Answer 4

about 50 - 60 i think a normal person

good question, get star from me

Answer 5

hmm good question.

I don't think there's actually a correct answer to this, since our vision isn't entirely analogous to that of a camera, however if I were to guess a range, I would say:

6-7 megapixels for our focused vision (ie what you're actually looking at directly)

And maybe 0.4 - 0.6 megapixels for things in your periphery.

Answer 6

About 127.  The human eye has about 130 million photoreceptors.  A megapixel is an array of 1024x1024 pixels.  About 95% of those are rod cells, which are sensitive to light but not color.  The other 5% are cone cells, which are less sensitive to light but can discriminate color.

A pixel in a good digital camera can record each of three color values with 8-bit precision.  It takes a lot of cone cells to give you something comparable to those 24 bits of data.

The center of your field of view has much higher resolution than your peripheral vision.  Your brain and eye muscles work together to move your high resolution vision to your center of attention.  That gives you the impression of much higher total resolution than you really have.  Everywhere you 'look' you have high resolution vision.  It's an incredible and efficient design.

Answer 7

There was no "race".   The media invented that term to sell newspapers.

Answer 8

AWESOME question! :)

Not a clue what an answer should be... um... 18 trillion? :D

Answer 9

"The average human retina has five million cone receptors on it. Since the cones are responsible for colour vision, you might suppose that this equates to a five megapixel equivilant for the human eye.

But there are also a hundred million rods that detect monochrome contrast, which plays an important role in the sharpness of the image you see. And even this 105MP is an underestimate because the eye is not a still camera.

You have two eyes (no kidding!) and they continually flick around to cover a much larger area than your field of view and the composite image is assembled in the brain - not unlike stitching together a panoramic photo. In good light, you can distinguish two fine lines if they are seperate by at least 0.6 arc-minutes (0.01.Degrees).

This gives an equivilant pixel size of 0.3 arc-minutes. If you take a conservative 120 degrees as your horizontal field of view and 60 degrees in the vertical plane, this translates to ...

576 megapixels of available image data."

Answer 10

thats a really good question... but normal people like me... have no idea. jkjk... you get a star from me!

Answer 11

A lot...hundreds...like 500+!!!

Answer 12

im short sighted, and i explain my eye sight to people as say a lower res photo than a higher res one :D

Answer 13

A lot