[geeks] 720 Megapixel photo

[wa2egp at att.net]

> 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.

> 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.

> Likewise we can make video displays with more colors than a human can
> specifically see, but it still helps because, again, we *ARE* affected
> by what we cannot directly see.

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).

Bob