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I wanted to simulate a telescope: First have the focal point go from near
the camera to an object far away (<<10 units tall but >100 units away).
I found that the aperture settings only gave me two results:
1) Nothing is really blurry at all.
2) Everything is really blurry, including an object placed at the
focal_point .
I desired to have a faraway object be in focus but objects twice the
distance (focal_point - camera_location) to be blurry.
It almost seems like we're missing a parameter, or that the effect of the
aperture is messed up by the scale of the scene you're in.
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*snip*
I use DoF.inc (Depth Of Field) when I set up focal blur. I haven't tried
the thing you describe, but perhaps looking at the file will give you
some answers?
http://www.wozzeck.net/images/DoF.html
--
Peter
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Faskinating. Povray should work like this.
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On Mon, 3 Mar 2003 10:49:47 -0500 "Greg M. Johnson"
<gregj:-)565### [at] aol com> wrote:
>It almost seems like we're missing a parameter, or that the effect of the
>aperture is messed up by the scale of the scene you're in.
How about a simple test scene (with lighting, focal blur settings)
using simple objects, so we can see what sort of scale you're talking
about?
--
Alan
ako### [at] povrayorg
a k o n g <at> p o v r a y <dot> o r g
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Doh?
When I gutted the scene and replaced a blob character with a sphere, I got
the response I'd expected. Perhaps my blob's center ain't at <0,0,0>.
In any case, I'm glad to have flushed out (I mean like duck-hunting, not
like the lavatory-using) Peter's DoF.inc file
"Alan Kong" <ako### [at] povrayWWWSPAMCOMorg> wrote in message
news:ca396vop8dlvgmt58f0f17kihssfdfhqnm@4ax.com...
>
> How about a simple test scene (with lighting, focal blur settings)
> using simple objects, so we can see what sort of scale you're talking
> about?
>
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"Greg M. Johnson" <gregj:-)565### [at] aolcom> wrote in message
news:3e64ab34$1@news.povray.org...
> Doh?
>
> When I gutted the scene and replaced a blob character with a sphere, I got
> the response I'd expected. Perhaps my blob's center ain't at <0,0,0>.
Sounds odd. Can you post a minimal scene that allows switching between a blob
and a sphere?
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Someday I'll release lots of my blob characters (as if people were dying to
get their hands on them, I know). But what I really meant is that I had :
i) a focal_point set up at a variable called LOOK_AT, and
ii) an object{diff2 translate LOOK_AT} , where diff2 was a union of a
50-component blob and some eyeballs spheres, with who knows how many
translate statements.
I'm not making a general statement about blobs where say sphere{0,2,1} does
end up not centered at <0,0,0>, which I believe is the reason for your
curiosity. I'm saying that my diff2 code is so messy that perhaps its
center wasn't near <0,0,0>.
"Tom Melly" <tom### [at] tomandlucouk> wrote in message
news:3e64acac$1@news.povray.org...
>
> Sounds odd. Can you post a minimal scene that allows switching between a
blob
> and a sphere?
>
>
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"Greg M. Johnson" <gregj:-)565### [at] aolcom> wrote in message
news:3e64bb54$1@news.povray.org...
> Someday I'll release lots of my blob characters (as if people were dying to
<snip>
Ah - I know the feeling. I once lost some very complex CSG like that. Turned out
it ended up in restricted air-space, and the Arcturians have refused to give it
back.
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