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I figured it was about time to learn how to USE Povray rather than just
tinker with it :)
To that end I've been experimenting with camera settings, and I noticed a
problem. If you look at the two scenes below, the only difference between
them is the aperture setting on the camera ( 0.0 vs. 0.4 ), yet the image
with focal blur is 'washed out'. Both are using Radiosity ( standard setting
5 ) and an area light, and both have anti-aliasing set to 0.3 - although the
focal blur feature seems to disable this when the aperture is >0. Is there a
way to prevent this washout without turning all the lights down? I apologize
if I'm just missing some simple setting that's in the documentation, but I
can't find it ATM :) I'm impressed both with the level of realism that focal
blur and radiosity add to an image, and the hit my rendering time takes :)
Post a reply to this message
Attachments:
Download 'camtest1.jpg' (12 KB)
Download 'camtest2.jpg' (16 KB)
Preview of image 'camtest1.jpg'
Preview of image 'camtest2.jpg'
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Yep, focal blur causes "wash out" alright, been brought up before. Not
sure if POV 3.1e has this fixed or not.
Charles Krause wrote:
>
> I figured it was about time to learn how to USE Povray rather than just
> tinker with it :)
> To that end I've been experimenting with camera settings, and I noticed a
> problem. If you look at the two scenes below, the only difference between
> them is the aperture setting on the camera ( 0.0 vs. 0.4 ), yet the image
> with focal blur is 'washed out'. Both are using Radiosity ( standard setting
> 5 ) and an area light, and both have anti-aliasing set to 0.3 - although the
> focal blur feature seems to disable this when the aperture is >0. Is there a
> way to prevent this washout without turning all the lights down? I apologize
> if I'm just missing some simple setting that's in the documentation, but I
> can't find it ATM :) I'm impressed both with the level of realism that focal
> blur and radiosity add to an image, and the hit my rendering time takes :)
>
> [Image]
>
> [Image]
--
omniVERSE: beyond the universe
http://members.aol.com/inversez/homepage.htm
mailto:inv### [at] aolcom?Subject=PoV-News
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Bob Hughes wrote in message <370C4D42.BD2E090B@aol.com>...
>Yep, focal blur causes "wash out" alright, been brought up before. Not
>sure if POV 3.1e has this fixed or not.
>
>
sounds to me like pov-ray cameras need a setting for exposure - and perhaps
one of those timer doo-hickeys so you can run around to the front and
raytrace yourself.
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<<sounds to me like pov-ray cameras need a setting for exposure - and
perhaps
one of those timer doo-hickeys so you can run around to the front and
raytrace yourself.>>
lol
--
Mike Metheny
lon### [at] vtedu
mik### [at] loneshepherdcom
http://www.loneshepherd.com/
"When one's words are no better than silence, one should keep silent."
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>doo-hickeys
oh yes, we should all have one of them, maybe even 2.
Rick
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HMMM... the focal blur really works well here, but I wonder if you can
compensate for the wash out by lowering the assumed gamma of global diffuse and
brilliances of all the textures... just a thought tho I'm not sure if they'll
work
Josh English
eng### [at] spiritonecom
Charles Krause wrote:
> I figured it was about time to learn how to USE Povray rather than just
> tinker with it :)
> To that end I've been experimenting with camera settings, and I noticed a
> problem. If you look at the two scenes below, the only difference between
> them is the aperture setting on the camera ( 0.0 vs. 0.4 ), yet the image
> with focal blur is 'washed out'. Both are using Radiosity ( standard setting
> 5 ) and an area light, and both have anti-aliasing set to 0.3 - although the
> focal blur feature seems to disable this when the aperture is >0. Is there a
> way to prevent this washout without turning all the lights down? I apologize
> if I'm just missing some simple setting that's in the documentation, but I
> can't find it ATM :) I'm impressed both with the level of realism that focal
> blur and radiosity add to an image, and the hit my rendering time takes :)
>
> [Image]
>
> [Image]
Post a reply to this message
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<!doctype html public "-//w3c//dtd html 4.0 transitional//en">
<html>
<p>Tom Melly wrote:
<blockquote TYPE=CITE>Bob Hughes wrote in message <370C4D42.BD2E090B@aol.com>...
<br>>Yep, focal blur causes "wash out" alright, been brought up before.
Not
<br>>sure if POV 3.1e has this fixed or not.
<br>>
<br>>
<p>sounds to me like pov-ray cameras need a setting for exposure - and
perhaps
<br>one of those timer doo-hickeys so you can run around to the front and
<br>raytrace yourself.</blockquote>
That sounds too scary...
<br>
<br>
<p>--
<br>Bryan Valencia
<br>Software Services
<br><A HREF="http://www.209software.com">http://www.209software.com</A>
<br><A HREF="mailto:bry### [at] 209softwarecom">mailto:bry### [at] 209softwarecom</A>
<br> </html>
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Josh English wrote in message <370D0BD7.AD319F32@spiritone.com>...
>HMMM... the focal blur really works well here, but I wonder if you can
>compensate for the wash out by lowering the assumed gamma of global diffuse
and
>brilliances of all the textures... just a thought tho I'm not sure if
they'll
>work
>
A good suggestion :) It works too - I put in...
#declare pov = <-6,6,0>;
#declare pof = <2.5,0.5,0>;
#declare arp = 0.2;
global_settings
{
#if (arp)
assumed_gamma 1.5
#else
assumed_gamma 1.0
#end
}
camera
{
location pov
focal_point pof
#if (arp)
aperture arp
blur_samples 20
#end
direction 1.5*z
right 4/3*x
look_at pof
}
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No, what they REALLY need is film... then I don't have to pay a small
fortune to get them done in a image setter ;-)
--
Lance.
---
For the latest 3D Studio MAX plug-ins, images and much more, go to:
The Zone - http://come.to/the.zone
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