Thanks for the input Kari!
    Does the adc_bailout (in either radiosity or global settings) have to be
changed to a smaller value, in order to allow for true 48-bit resolution
output?
George


"Kari Kivisalo" <pro### [at] luxlabcom> wrote in message
news:3CB6EBCE.1A83DA4D@luxlab.com...
> George Pantazopoulos wrote:
> >
> > It would be a great feature for creators of realistic, high-dynamic
range
> > scenes ( with 1/r^2 lighting falloff ), to have POV-Ray be able to
> > automatically compress the dynamic range of the output image, as seen on
> > this web page: http://www.luxlab.com/c/compress.htm It would be
especially
> > handy for animations.
>
> Automating this is not trivial but logarithmic or some other transfer
> curve with adjustable compression factor may be usefull. The curve
> presented on that page doesn't fit all cases. It's just an example to
> break the 100% mental limit. For low contrast scenes there is dynamic
> range expansion. Just flip the curve around the diagonal. I see these
> as special cases of tonal range mapping.
>
> Tweaking the curve by hand yields the best results. It's like working
> in the dark room controlling the development, exposure and whatever
> else photographers do there :)
>
>
> _____________
> Kari Kivisalo

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