Subject:
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Re: Simple POV-Ray Question - Perspective
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Newsgroups:
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lugnet.cad.ray
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Date:
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Fri, 23 Jan 2004 17:59:19 GMT
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Viewed:
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1922 times
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In lugnet.cad.ray, Larry Pieniazek wrote:
> In lugnet.cad.ray, Kevin L. Clague wrote:
> > In lugnet.cad.ray, Shaun Sullivan wrote:
> > > Hi All,
> > >
> > > I should know this ... what's the trick for turning off "perspective", if you
> > > will, so that you can do a straight-on side view? That is, to remove the
> > > "vanishing into the horizon" effect?
> > >
> > > ISO views, is that what it's called? Ugh ...
> >
> > Using orthographic does not always work. You can get the same effect by seeing
> > the camera angle to 0.1
>
> Don't you then have to move the camera a ways back to get all your objects in
> the image compared to larger camera angles?
I've run into this problem, and my caveman-sophistication led me simply to
translate the object a little to put it back in line with the look_at
coordinates. Even so, I often have to change the "PCT" value to 5 or 10 to
accommodate all of my supercool renderings in the image window.
But now that I think about it, I guess that would work best if your whole scene
is a single object, so it's hardly a panacea.
> This is what I tend to do, long ways away, small canera angle (anaogous to
> "telephoto" in real photogs, the images there have very little perspective
> compared to normal which in turn has less than "wide angle").
>
> The downside of this is that if you are using fog or mist, your primary scene
> objects may tend to grayout a bit.
That sounds nifty. I'll have to check it out (and I'd like to experiment with
more extensive atmospheric effects (more liberal media, perhaps.))
Dave!
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Message has 1 Reply:
 | | Re: Simple POV-Ray Question - Perspective
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| (...) As long as you let L3P calculate the camera distance, the whole model should be visible, and (mostly) fill the frame. I just copied the L3P auto-camera algorithm into LDView, and it works consistently for me with camera angles ranging from 0.1 (...) (21 years ago, 23-Jan-04, to lugnet.cad.ray)
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Message is in Reply To:
| | Re: Simple POV-Ray Question - Perspective
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| (...) Don't you then have to move the camera a ways back to get all your objects in the image compared to larger camera angles? This is what I tend to do, long ways away, small canera angle (anaogous to "telephoto" in real photogs, the images there (...) (21 years ago, 23-Jan-04, to lugnet.cad.ray)
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