[Bf-committers] depth of field

Nathan Vegdahl bf-committers@blender.org
Mon, 21 Jul 2003 14:30:35 -0700 (PDT)

   As far as I am concerned, when it comes to rendering, there are two main
goals: flexability and speed.  Depending on the project, one may be more
important than the other.

   With depth of field I assume it could be toggled on or off, and thus is
would add flexability without hurting the render-times of images or animations
that don't use it.  Besides, if it used the same perturbed images as
motion-blur, then it wouldn't effect the render-times any more than the
motion-blur itself would (in the case of Reyes based renderers, they use the
same perturbed samples for antialiasing, motion blur, and DoF, hence why they
are able to render such things with minimal impact on the render-times).

--Nathan Vegdahl

--- Ton Roosendaal <ton@blender.org> wrote:
> Hi,
> a) is not true. there are many ways to achieve this effect with the  
> current blender architecture
> b) completely depends at how you want to implement 'complex' or  
> 'photorealistic'. You can do it by perturbing the camera 256 times, and  
> accumulating the images. That works, but is slow.
> If you want to do it with ray-tracing, you'll have to write that first.
> In general, the quest for realism (or complex photorealism) was never a  
> focus for Blender. Predictable and fast render times were, projects  
> under control was, animation rendering was.
> But with the advance of computer technology & algorithms we shouldn't  
> stop to improve our renderer. It has to be at least acceptable for  
> animators! So where do you put the limit? Always a difficult topic...
> -Ton-
> > "The quest for 'real' D.o.F. is beyond what Blender offers now,  or  
> > what we should strive for."
> >  
> > I was wondering if you meant
> >  
> > a) that it is not wishable to try to implement depth of field at all  
> > in Blender
> >  
> > or
> >  
> > b) it is not, in short terms, faisable and wishable to try to  
> > implement COMPLEX, photorealistic depth of field in Blender
> >  
> > thanks,
> >  
> > uneboite
> >
> <image.tiff>
> >
> > Add photos to your e-mail with MSN 8. Get 2 months FREE*.
> ------------------------------------------------------------------------ 
> --
> Ton Roosendaal  Blender Foundation ton@blender.org  
> http://www.blender.org
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