P3D Re: Coming At Ya

[Paul Talbot <ptww@xxxxxxxxx>]

I wrote:
> 
> >You won't break or violate the window just
> >by having an object stick through the center of the (wide-open)
> >window.  But you should not try to stick objects through the window
> >frame (especially the vertical portions).

And Bob Maxey replied:

> But for me, that is what I like. I understand some do not like this,
> but I shoot for me. 

Andrea wrote:

>>The problem with "window violation"; that is, when an object appears
>>to come through, yet at the same time be "cut off" by the stereo
>>window, is that it causes a depth-cue conflict.  [snip] The brain
>>tries to reconcile these clashing cues, and what usually results is
>>the collapse of the 3D illusion for the object in question, [snip]
>>Thus this situation is considered best generally avoided. :-)

To which Bob Maxey replied:

> Yup, and this I too, avoid. I remember some photographs I took of a
> vintage fighter plane, and this very thing happened. [snip] the
> photographs were useless because of this problem.

Bob, Andrea and I were describing the same thing.  I must not have
been clear because in one case you say you like it and in the other
you say you avoid it.  Because of the problems that window violations
cause when trying to view the image*, as I said: "you should not try
to stick objects through the window FRAME (emphasis added)."  If
you have objects coming through the window, you usually want to
avoid having them pierce the edges of the window (i.e., the frame).

*I intentionally avoided avoided a description of the visual effects
perceived when there is a window violation.  I believe those effects
vary among different observers.  Some of the effects that I have
read about are not the same ones that I observe, and others that
I do observe are not mentioned much.  It is the "spin" that our
brains put on the conflicting clues that determine how we interpret
what our eyes perceive; different brains resolve the conflicts in
different ways.

Paul Talbot


------------------------------