In article <3D3### [at] skynetbe>,
 Fabien Mosen <fab### [at] skynetbe> wrote:

> > That's a good idea...you could do the same thing as the post_process 
> > curves filter without needing the patch, though it would still have the 
> > limitations of what you can put through a PNG file.
> 
> What's the bit-depth limit ?

48-bits per pixel, which I assume is 16 bits per component. 65536 levels 
per component, in the range 0-100%. The C "float" type, which POV uses 
for color components internally, is at minimum a 32-bit floating point 
number, which can handle a huge range of values and is much more precise 
in the 0-1 range.
Plus you might run into problems with gamma correction.

-- 
Christopher James Huff <chr### [at] maccom>
POV-Ray TAG e-mail: chr### [at] tagpovrayorg
TAG web site: http://tag.povray.org/

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This is excellent... as usual.







Philippe

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Apache wrote:

> Yes, please render a 80000 x 60000 pixel version for me.

Jesus, how big are you going to print it?


-- 
___     ______________________________________________
  | \     |_         website: http://davidf.faricy.net/
  |_/avid |ontaine           email: <dav### [at] faricynet>

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Gilles Tran wrote:
> 

Ye gods.  Put this in your resume when you apply to work for
Dreamworks or Pixar.

Regards,
John

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Gosh. I feel more humble than usual now.
Feels serene in spite of the tree's reflection.

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> - Regrets : the lighting.
Jeez, man -- stop apologizing!  You're giving Norbert Kern a run for his 
money (and leaving the rest of us unsticking our jaws from the floor :)!

(I haven't had a chance to *touch* my copy of 3.5 since I installed 
it... whaah. :_(

- Kevin R.

Gilles Tran wrote:
> Jpeg compression wasn't too kind on this one :( Well I'll put some close-ups
> and details on my site sometimes in the next months.
> 
> - Rendered with povray 3.5
> - Uses low quality radiosity (count 10 error_bound 1...)
> - Terragen sky
> - Terrain modelled with World Machine (beta)
> http://students.washington.edu/sschmitt/world/ (great prog, BTW)
> - Render time at 1200*1600 takes 6 hours and 600 MB of RAM (P4, 1.7Gz, 1Gb
> RAM)
> - 15000 plants with something like 20 different Xfrog models, all by me
> except the main tree, the small bushes and trees in the background, and some
> grass. The "evil" tree is by me too. 2000 leaves and twigs in the pond.
> Possibly I'll make some of the plants available later this year.
> - The hardest part was to create the backlit leaves for the main tree. For
> this I had to make "fleshy" leaves and fill them with scattering media. I
> wish I could have done it on all the plants, but either I'll wait for faster
> machines or find a better solution for backlit translucent material. Some of
> the flowers were double_illuminated.
> - Dragonflies modelled in Rhino with the demo version (before I bought it).
> They'll surely look better at the final full res of 6000*8000 which is
> rendering now.
> - The frog is a Poser one. It's almost invisible at 600*800 but it's
> there...
> - Regrets : the lighting. I had a lot of trouble with it, as the original
> image
> is not very gamma-tolerant : it looked ugly on low-gamma monitors and much
> too dark on others. I had to find a middle way so I tweaked the tones in
> post-process and some colors were lost (and there's some extra graininess
> too). I hope it looks right on your PC or Mac.
> 
> G.
> 
> --
> 
> **********************
> http://www.oyonale.com
> **********************
> - Graphic experiments
> - POV-Ray and Poser computer images
> - Posters
> 
> 
> 
> 
>

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