[Bf-committers] DOF camera parameters.
Jonathan Merritt
bf-committers@blender.org
Thu, 10 Jun 2004 21:11:29 +1000
Hi Alexander,
Indeed, both circumscribing the circle-of-confusion and z-blur are both
hacks...
In the z-blur method, hiding has already been done prior to calculation
of blur. The advantage that the CoC method has is that hiding is *not*
done prior to calculation of the blur. Hence, objects with a large
circle-of-confusion can blur out from "behind" objects that would
otherwise hide them (which happens in reality due to the fact that the
lens and aperture of a real camera have a non-infinitesimal width).
However, even the CoC method (as described) is still a hack, since the
inside of the circle of confusion is not sampled.
Shouldn't z-blur be possible as a filtering process (provided you can
access depth information for each pixel)?
Jonathan Merritt.
>Uhm, well, if people are now going _such_ hackish ways (motion
>blur and rotating the camera around a point), I wouldn't understand
>why my (already perfectly working and in-every-day-production-use)
>zblur-based DOF system has been refused :-)
>
>For further reference, see:
>
>http://blender.instinctive.de/downloads/demo_dof/
>
>Also, the source code to instinctive-blender is at your service,
>of course... but be sure to give me some credit at least
>for the autofocus stuff :-)
>
>| alexander ewering instinctive new media
>| ae[@]instinctive[.]de http://www[.]instinctive[.]de
>
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