From: Bob Hughes
Subject: Re: Shrine to Light (41k)
Date: 18 Mar 2000 18:26:58
Message: <38d410c2@news.povray.org>
Could use some brightening of the orange glow so that the shadows from the
columns appear more distinct. I had to really look hard to see them.
Very neat image.
Bob
"Kari Kivisalo" <kar### [at] kivisalonet> wrote in message
news:38D### [at] kivisalonet...
|
| A splash screen for my website. Nothing special how it looks.
|
| It's a sum of 4 images: front light, back light, glow light
| and glow light + media. The idea is to separate each light source
| to it's own layer in photoshop so that their intensity and color
| can be adjusted _after_ render with full res aa image. It's also
| nice to be able to smooth the media in photoshop and use fewer
| samples :) Works only with non-gamma corrected images because
| gamma is non-linear operation.
|
| Read more about it from
| Grafica Obscura/Synthetic Lighting for Photography
| http://www.sgi.com/grafica/synth/index.html
|
|
| BTW, Photoshop doesn't seem to have ADD as layer mode so I used
| SCREEN which looked close enough. To do these operations
| properly for gamma corrected output would require 48 bit images,
| ADD layer mode and preview gamma layer (which can be done in
| photoshop with CURVES adjustment layer). I first developed
| the image with gamma correction and when I started to use the
| layer magic it was quite obvious 24 bits just isn't enough
| because the images must be de-corrected before layer operations
| and corrected again after.
|
| -----------------------------------------------------------------------
| Kari Kivisalo www.kivisalo.net
--------------------------------------------------------------------------------
Kari Kivisalo wrote:
> A splash screen for my website. Nothing special how it looks.>
This seems a very interesting technique and the result is very smooth.
How would the image look without it, I mean if it was rendered directly ? Just
curious.
G.
From: David Fontaine
Subject: Re: Shrine to Light (41k)
Date: 27 Mar 2000 23:08:22
Message: <38E02F2A.85F9926@faricy.net>
Possibly the best image I have seen today.
The effect is awesome!
--
___ _______________________________________________
| \ |_ <dav### [at] faricynet> <ICQ 55354965>
|_/avid |ontaine http://www.faricy.net/~davidf/
"The only difference between me and a madman is that I'm not mad." -Dali