the_ajj wrote:
> Hi,
> 
> I got this comment regarding one of my images 'The Chess Game' which can be
> seen in the images newsgroup:
> 
> "so, did you render an 8bit image out of povray?
> Ideally you'd render a float precision image so you can get all the
> out-of-focus hilight shapes just as bright as the in-focus hilights."
> 
> I have no idea what this means or how I do it.  Any ideas?

If you have no idea what this means it's a bit premature to ask for a 
certain solution (i.e. floating point format images).

But to shorten things: Internal focal blur works on unclipped colors, 
you can generate unclipped high dynamic range output with POV-Ray (which 
however does not guarantee good results with post processed focal blur) 
and you can do reasonable post processed  focal blur of overexposed 
areas with low dynamic range images by using exponentical tone mapping 
and adapting the blur function accordingly.

Christoph

-- 
POV-Ray tutorials, include files, Landscape of the week:
http://www.imagico.de/ (Last updated 31 Oct. 2005)
MegaPOV with mechanics simulation: http://megapov.inetart.net/

Post a reply to this message