Paris wrote:

> http://www.caligari.com/products/truespace/ts4/images/reflectance-med.jpg

Umm, There are techniques to do this in POVRay easily (quickly or 
accurately.. your choice:

http://www.dpalbum-online.com/mraiford/povray/images/910 -- Accurate, 
but a bit slow

http://64.233.187.104/search?q=cache:http%3A//runevision.com/show.asp%3Fid%3D217 
-- Very fast to render. Pardon the Google Cache, Rune's page appears to 
be down.

> http://www.finalrender.com/products/images/finalShaders/fR-carpaint_01.jpg

Believe it or not, There is a setting in POVRay for reflections called 
fresnel that gives the exact effect you're talking about

> http://www.finalrender.com/products/images/finalShaders/fR-DistanceFur_02.jpg
> 

http://64.233.187.104/search?q=cache:http%3A//runevision.com/show.asp%3Fid%3D215

Gee... Could this be what you were talking about??!

> http://paris1839.tripod.com/computers/afterain.jpg

I don't quite understand what is particularly striking about the above 
image. IMO it's particularly mundane, and doesn't even deserve mention 
in your attempt to bash POV-Ray.

> The main point of my original post (and this one) shall be repeated here for
> emphasis.  My point is that Pov-Ray is lagging behind commercial packages
> in terms of photorealism.   I then gave some examples, and suggestions for

Our point is POV-Ray is *NOT* a commercial render. Its a volunteer 
effort by people gracious enough to spend their spare time working on a 
top-notch *raytracer* Feel free to write a patch and share it with us, 
if you think its so far behind... But I believe theres even a renderman 
compliant patch out there. somethint called POVMan, google for it.

> how we can get Pov-Ray back into a competition with these packages.  Some
> of these are very simple to implement (EXPOSURE_OUTPUT),  others are not

If they're so easy to implement, then by all means, have at it... But if 
you're just attempting to whine "Its easy, why isnt (insert commerical 
renderer's feature here) implemented." then your best course of action 
would be to shut up. Maybe it is easy, maybe not. If you have any 
experience in software development, you'd know what was easy. If you 
don't, then you're not qualified to have such an opinion, are you?

Most of the images you've presented here are extraordinarily trivial to 
produce with the current official version of POVRay ... We're sorry if 
we can't sprinkle magic dust and make it happen for you. You actually 
have to climb down off your high horse and read occasionally to get it.

>  To get a rough idea of what spectral integration + iris simulation alone
> can give you, you might want to start here.  And in particular the
> architecture part of the gallery:


> http://www.maxwellrender.com/indexeng.html

What, something like this?:

as for "iris simulation" ... what a buzzword, let me tell ya':

Do you happen to mean something like... ... focal blur.

POVRay has it, its accurate and works like a champ. But it doesn't 
translate exactly to f-stops, but I'm sure you could figure that out.

http://www.ignorancia.org/lightsys.php

> 
> --
> Paris
> 
> 
> 
>

Post a reply to this message