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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.
Curiously - as a counterpoint to this - most people cannot distinguish the difference in quality between a 300dpi and a 150dpi photo when printed at 6x4", when viewed at normal viewing distances.
So: although the human eye and brain when combined can resolve massive amounts of data, for imaging purposes, 150dpi output is more than enough to provide adequate data for us to accept the result as photographic quality.
But don't forget that women have more cones and men have more rods - I kid you not.Therefore the ladies see colours brighter than gents but can't see as well when it gets dark.
:thumb44332138:
:thumb50783351:
:thumb19170521:
Found this somewhere in the net.
Hope you like it :]
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.
Curiously - as a counterpoint to this - most people cannot distinguish the difference in quality between a 300dpi and a 150dpi photo when printed at 6x4", when viewed at normal viewing distances.
So: although the human eye and brain when combined can resolve massive amounts of data, for imaging purposes, 150dpi output is more than enough to provide adequate data for us to accept the result as photographic quality.
But don't forget that women have more cones and men have more rods - I kid you not.Therefore the ladies see colours brighter than gents but can't see as well when it gets dark.
:thumb44332138:
:thumb50783351:
:thumb19170521:
Found this somewhere in the net.
Hope you like it :]
.
H ?!?
In this hole
That is me
Left with a heart exhausted
Whats my release??
What sets me free?
Do you pull me up just to push me down again?
Peel me from the skin
Tear me from the rind
Does it make you happy now?
Tear me from the bone
Tear me from myself
Are you feeling happy NOW?
Does it make you happy?!
Are you feeling happy?!
Are you fuckin happy
Now that I'm lost left with nothing?!
The brain,the heart and the nerve
The Brain :confused:
I could while away the hours, conferrin' with the flowers
Consultin' with the rain.
And my head I'd be scratchin' while
my thoughts were busy hatchin'
If I only had a brain.
I'd unravel every riddle for any individ'le,
In trouble or in pain.
With the thoughts you'll be thinkin'
you could be another Lincoln
If you only had a brain.
Oh, I could tell you why The ocean's near the shore.
I could think of things I never thunk before.
And then I'd sit, and think some more.
I would not be just a nothin' my head all full of stuffin'
My heart all full of pain.
I would dance and be merry, life would
It`s All Gone
© 2007 - 2024 huGoFdeStruction
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Mom & Dad can't agree on blue and green. The final paragraph may explain why. Thanks.