Does anyone know how to make a picture with sepia hues (e.g. the very
first scene in Titanic)?

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Steven Jones wrote:

> Does anyone know how to make a picture with sepia hues (e.g. the very
> first scene in Titanic)?

Solution 1
- Declare a general Sepia color at the beginning of your scene
- Use this color in the whole scene, for pigments, lights, fog etc., with
different amounts of it (Sepia*0.1, Sepia*0.3, Sepia*1.1, Sepia*2...)
- Hint : using slightly different Sepias hues can make the scene richer
(a bluish one, a reddish one...)
- Example (more yellow than Sepia though)
http://www.mediaport.net/Artichaud/Tran/english/gtp178e.htm

Solution 2
Make the picture with the "real" colors and then use a paint programme to
desaturate the colors and give them the chosen hue. Most of them offer
this possibility. You won't be jailed for that and the result may be
closer to actual sepia photographs than Solution 1. For better results,
you'll probably have to choose carefully the original colors so that the
constrasts look good in sepia. Old B&W cinematographers knew a lot about
that.

G.

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The sepia color is a guess but here's one way to get a similar effect with
POV-Ray alone:

//camera and filter box location
#declare LCX = 0;
#declare LCY = 0;
#declare LCZ = -10;

camera {
  location <LCX,LCY,LCZ>
  angle    67
  look_at  <0,0,0>
}

#declare SepiaContrast = 1.25; //higher is brighter, lower is darker
// negative numbers can be used
#declare SepiaSaturation = 0.125; //higher is less (also allows more
original color)

box {-1,1 //large camera angles seem okay with this
 pigment {rgbft<.8,.4,.2,SepiaContrast,SepiaSaturation>}
 finish {ambient 1 diffuse 0} //ambient 1 or 0, seems to be no difference
  translate <LCX,LCY,LCZ> //same as camera location
}
/* important thing to remember is to use the same transformations on both
camera and box */


Steven Jones wrote:
> 
> Does anyone know how to make a picture with sepia hues (e.g. the very
> first scene in Titanic)?

-- 
 omniVERSE: beyond the universe
  http://members.aol.com/inversez/homepage.htm
 mailto://inversez@aol.com?Subject=PoV-News

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Gilles Tran wrote:
> 
> Steven Jones wrote:
> 
> > Does anyone know how to make a picture with sepia hues (e.g. the very
> > first scene in Titanic)?
> 
> Solution 1
> - Declare a general Sepia color at the beginning of your scene
> - Use this color in the whole scene, for pigments, lights, fog etc., with
> different amounts of it (Sepia*0.1, Sepia*0.3, Sepia*1.1, Sepia*2...)
> - Hint : using slightly different Sepias hues can make the scene richer
> (a bluish one, a reddish one...)
> - Example (more yellow than Sepia though)
> http://www.mediaport.net/Artichaud/Tran/english/gtp178e.htm

And I thought I would be over stating the obvious by suggesting what you
describe above. I am glad you answered with this reply instead of me :)


-- 
Ken Tyler

mailto://tylereng@pacbell.net

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