Jerome COLIN wrote:
> 
> ....I made with Megapov and Povray 3.5.

They all look very nice although post processed focal blur is often
somewhat irritating.

> Most of them were post-processed with The Gimp.

I did not know Gimp is capable of generting focal blur.  Or were all of
the images with focal blur made with Megapov?

Christoph

-- 
POV-Ray tutorials, include files, Sim-POV,
HCR-Edit and more: http://www.tu-bs.de/~y0013390/
Last updated 07 Dec. 2002 _____./\/^>_*_<^\/\.______

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On Mon, 9 Dec 2002 10:20:29 +0100, "Marc Jacquier"
<jac### [at] wanadoofr> wrote:

>Yes indeed :) but is it a standard notation?
>I'd reverse it to make it ascending: low strings 1st

Sure you're right. Argh, gimme tab or gimme death :)


Peter Popov ICQ : 15002700
Personal e-mail : pet### [at] vipbg
TAG      e-mail : pet### [at] tagpovrayorg

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Thanks to all !
I did not expect such an infatuation.

As requested, some comments :
Lightning : radiosity, image map as light sources.

POV Focal blur (besides, it gives an very efficient but time consuming
antialiasing effect. It is probably due to the sampling method, isn't it
?).

Frenel reflection/refraction for all reflecting textures.

The wood textures :
Usual Image map with the relevant bump map or the relevant heightfield.

Post-processing :
Sorry but the focal blur was made with povray and was not postprocessed (the
rendering time still hurts).
The gimp was used for tint and for gamma correction (+curve).
Sometimes, I add a glow effect (Gaussian blur on bright pixels) to give a
warm mood (refer to sponza pictures) or a glittering effect (scene
radiosite.jpg)

Rendering time :
Rendering time for atrium.jpg is about 1.5 hour for the radiosity
calculation with no antialiasing nor focal blur. 8 hours for the final
pass. (Athlon 1.4Ghz 256 Mo DDR)
Postprocess : tint, gamma-correction, glow, and the sky which was added
after a sky picture downloaded from the net.

I hope it is clear (sorry for my english)

The next weekend, I will post the source for one of these pictures.

Bye,

Jerome

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Jerome COLIN wrote:
> 
> Post-processing :
> Sorry but the focal blur was made with povray and was not postprocessed (the
> rendering time still hurts).
> [...]

If you say it... but i could swear

http://site.voila.fr/jcolin/galerie/boules_final.jpg
http://site.voila.fr/jcolin/galerie/caustic.jpg

have post processed focal blur because the reflections on the objects in
focus are very sharp too while in real life (and with internal focal blur)
the reflections would be blurred because they depict distant objects.

Anyway, could you post your focal blur settings for those pictures?

Christoph

-- 
POV-Ray tutorials, include files, Sim-POV,
HCR-Edit and more: http://www.tu-bs.de/~y0013390/
Last updated 07 Dec. 2002 _____./\/^>_*_<^\/\.______

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> POV Focal blur .... gives an very efficient but time
> consuming antialiasing effect. It is probably due to the
> sampling method, isn't it?

Yes, it looks better than the default anti-alias settings, but if you're
only after an anti-alias effect, it's faster to use:  +AM2 +A0.15 +R2 -J


See you next time,
Hugo

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You will see in the binaries that I told the truth. :)

I don't know exactly whether it is accurate or not, but it is for Povray and
it does not depend on me.
Anyway, i noticed that reflected objects do not seem to follow physical laws
in terms of blurring, indeed. Perhaps i am wrong. I know that curved surface
can behave as lens and thus change the focal point or the focal distance.

As i can remember, my focal blur settings for boules_final.jpg were :
Variance 0
Confidence 0.999...
Count (?) 200
These settings were required to avoid noise and artefacts (which has already
be reported on this newsgroup).

Best regards,

Jerome


Christoph Hormann wrote:
>
>Jerome COLIN wrote:
>>
>> Post-processing :
>> Sorry but the focal blur was made with povray and was not postprocessed (the
>> rendering time still hurts).
>> [...]
>
>If you say it... but i could swear
>
>http://site.voila.fr/jcolin/galerie/boules_final.jpg
>http://site.voila.fr/jcolin/galerie/caustic.jpg
>
>have post processed focal blur because the reflections on the objects in
>focus are very sharp too while in real life (and with internal focal blur)
>the reflections would be blurred because they depict distant objects.
>
>Anyway, could you post your focal blur settings for those pictures?
>
>Christoph
>
>POV-Ray tutorials, include files, Sim-POV,
>HCR-Edit and more: http://www.tu-bs.de/~y0013390/
>Last updated 07 Dec. 2002 _____./\/^>_*_<^\/\.______
>

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3DF4B267.D48A7FE0@gmx.de...
>
> have post processed focal blur because the reflections on the objects in
> focus are very sharp too while in real life (and with internal focal blur)
> the reflections would be blurred because they depict distant objects.
>
I don't agree: it is true for a reflection on a plane surface but for
reflection in a sphere, depth of field is deeper: the sphere works as a
convex lense and objects seen "thru" are sharper .

Marc

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Excellent images.

Let me give you some comments:

Specially Scene_radiosite (very nice lightning), boules_final (nice
textures, specially the bumpy ball), clef (the key is excellent, I don't
like the marble and the match too much but maybe it is just me),
montre_noire (the sphere of the watch is a little flat, but the modelling
is excellent) and caustic (excellent wood and photons, I think that the
colors due to the caustic effect are too bright for the lightning present
in the scene, the rest is absolutely perfect).

Best regards and keep us drooling with more images.

Fernando

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Wow great work!!

> http://site.voila.fr/jcolin/galerie/atrium.jpg
> http://site.voila.fr/jcolin/galerie/sponza.jpg

Why do these atrium ones look to familiar?

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"Thomas Lake" <smi### [at] hotmailcom> wrote in message
news:3df5339b$1@news.povray.org...
> Wow great work!!
>
> > http://site.voila.fr/jcolin/galerie/atrium.jpg
> > http://site.voila.fr/jcolin/galerie/sponza.jpg
>
> Why do these atrium ones look to familiar?

To quote the initial post: "You will notice that there are 2 attempts to contribute to
the
sponza atrium
competition though I was too lazy to post my renderings."

All the best,

Andy Cocker

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