[geeks] 720 Megapixel photo

[velociraptor]

On 7/17/06, wa2egp at att.net <wa2egp at att.net> wrote:
> > Well, actually that's not true.
> >
> > Even if your eye cannot detect an individual pixel or color change, it
> > will still have an effect on what you perceive, most often for the
> > better.
>
> If you can't detect it, how can you perceive it?  I'm puzzled.

The brain is a funny thing--you may unconsciously notice things that
you can't detect directly by viewing/listening.

> > It's like sound systems that can produce over 20KHz: you can't directly
> > hear it, but you do hear the effects of it.
>
> I could understand beat notes between those frequencies since there is
> some non-linearity in the human system.

For instance, inaudible frequencies can increase/decrease certain
types of brainwaves in humans.  This is how "sleep" audio or
"meditation" audio tracks assist you in getting different brainwave
patterns going.

> I was speaking more of resolution rather than discernible shades.  Of
> course we don't really see yellow on a monitor since it is not capable
> of producing that color.  We get fooled by a red-green combo that
> stimulates the retina the same way yellow does (makes reproducing
> colors easier).

Well...not to be pedantic (ok, a little ;-), but "yellow" pigment is
not "yellow" either.  It simply reflects the yellow area of the
spectrum so that's what we perceive.  If you have seen the "spectrum"
shift photos/video that show how bees and other insects see, you'll
get where I'm going here.  There's a lot of light flying around out
there.  Our brains are quite good at sorting things out without
conscious interference from us...and a good thing too or we'd spend
all our time thinking about breathing.

=Nadine=