On Mon, 14 Apr 2008 10:22:06 -0800, floyd@[EMAIL PROTECTED]
(Floyd L.
Davidson) wrote:
>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.
And he is now repeating what I said earlier. Go back and read the
posts where I pointed out that the mark on top of the camera
identifies the focal plane position.
A plane can be a solid surface, but a plane is also extended to the
area where there is no solid surface. That's what I've been saying
all along.
BTW...what are you doing responding to me, Floyd? You promised
earlier that you would never do this again.
>>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???
Go back to the beginning.
--
Tony Cooper - Orlando, Florida
|
