Eric Stevens wrote:
On Thu, 20 Dec 2012 16:58:32 +0100, Wolfgang Weisselberg
Eric Stevens wrote:
On Wed, 19 Dec 2012 01:20:17 +0100, Wolfgang Weisselberg
Eric Stevens wrote:
On Sun, 16 Dec 2012 18:25:21 +0100, Wolfgang Weisselberg
Eric Stevens wrote:
On Thu, 6 Dec 2012 17:03:01 +0100, Wolfgang Weisselberg
Eric Stevens wrote:

control colour balance and that the F801s could only control exposure.
It did this on the basis of a data base of thousands of images. It
must have had color sensitivity of some kind as, for example, it could
tell the difference between a large white-walled building and a snow
scene.

So you're basically saying that there's no way to detect the
difference between a large white-walled building and a snow
scene without colour sensitivity, not even by seeing that the
snow scene was much brighter than the building?

But was it much brighter than the building?

So why do you think snow is a different colour than a white
walled building?

http://skaremedia.com/sites/default/...ickr/MyEye.jpg

Using an instrument with an amazingly variable automatic
white balance (amongst other really wild stiff) --- which is
also fed and strongly influenced by "how it should look" ---
is a very good method to measure.

You can't even tell what thing is brighter when they're only
a couple centimeters away from each other --- see optical
illusions.

Next up (and with much more justification): Santa Claus really
exists and brings everyone gifts, I've seen him in dozens of
copies in the mall.

So we now have it on record that you think you don't know what you are
looking at.

We have it on record that *you* think your eyes are reliable
colour measurement instruments --- even when used in different
circumstances and without being able to see both scenes at the
same time --- whereas *I* claim they can easily be tricked /and/
have given you enough pointers to research that on your own.

You are reading too much into what I wrote, unless you believe white
walls are never found in the presence of snow.

Oh, sure, there are. So, what did the camera make from that
scene?


Then we have it on record that you believe knowing that the eye
can be tricked equals "you don't know what you are looking at".

Well, doesn't it?

Say, how do you know you saw white walls in the presence of
snow, or can't your eyes be tricked? Probably that was a
yellow wall and smog-stained snow you say ...

Maybe you /can/ bring proof that *your* eyes are good, absolute
colourimeters, but I wouldn't bet a cent to an Earldom on it.

This is not just a discussion of colour.

Well, either colour measuring is necessary, or it's not. In
the latter case "It must have had color sensitivity of some
^^^^
kind" is proven wrong --- which was my point, in the former
case it *is* a discussion of colour and whether your eyes can
report them correctly.

Oh, BTW, let me congratulate you on embarking on your quest
to ridicule me since I don't agree with you. But look up what
Ghandi said about that.

Tsk, tsk. You are too sensitive.

.... for your ploys to work.

Maybe you have seen too many Santa
Clauses in the mall?

Are they spitting images of you, or where's the connection?

-Wolfgang