tony cooper <tony_cooper213@[EMAIL PROTECTED]
> wrote:
>On Mon, 14 Apr 2008 06:42:31 +0100, Rob Morley <nospam@[EMAIL PROTECTED]
>
>wrote:
>
>>In article <rsn504hpg7u76h9e0dt6100o75b0qg8ldo@[EMAIL PROTECTED]
>, tony cooper
>>tony_cooper213@[EMAIL PROTECTED]
says...
>>> On Mon, 14 Apr 2008 04:19:49 +0100, Rob Morley <nospam@[EMAIL PROTECTED]
>
>>> wrote:
>>>
>>> >In article <2dg50411fl4pdfkajovcppqqpbbelhnp3a@[EMAIL PROTECTED]
>, tony cooper
>>> >tony_cooper213@[EMAIL PROTECTED]
says...
>>> >> On Mon, 14 Apr 2008 02:55:46 +0100, Rob Morley
<nospam@[EMAIL PROTECTED]
>
>>> >> wrote:
>>> >
>>> >> Are you being intentionally obtuse? There are no objects involved
in
>>> >> the focal plane other than the point on the camera where the focal
>>> >> plane is determined. That is a point, and not a surface. The
plane
>>> >> is not an object and the line is not an object. The plane is based
on
>>> >> an intersection point.
>>> >
>>> >Is that supposed to make sense?
>>>
>>> I didn't expect it to...to you.
>>
>>OK, lets try again. You know that little mark on the top of your
>>camera, a circle with a line through it? Extend the line to the width
>>of the camera, then move it vertically to the bottom of the camera. The
>>points through which the line passes make up part of the focal plane.
>>Open up the camera and what do you find there? A film or image sensor.
>>A real actual 2-dimensional surface that coincides with the focal plane
>>you just extrapolated from the little symbol on the top
>
>You are getting close, but still not quite there.
Tony, he *nailed* it!
>There is a surface
>within the camera, but the plane passes across that surface just as
>the line extends.
So? You are merely repeating what he said, not adding
to it.
>The focal plane is still the focal plane where it
>is not passing across the surface.
A fact that merely repeats what he said above.
>You are making progress because
>you originally said "Possibly because it's bollocks. For a start, a
>plane is a plane, not a line" and now you've extended your thinking to
>include the concept of a line.
A plane is a surface, not a line.
However, a line is part of what defines a plane; hence
of course he is including the concept of a line.
I just don't see what your point is supposed to be???
--
Floyd L. Davidson <http://www.apaflo.com/floyd_davidson>
Ukpeagvik (Barrow, Alaska) floyd@[EMAIL PROTECTED]
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