From http://www.blender.org/documentation/htmlI/x12981.html
The Depth of Field filter is a 2D filter, i.e. a post processing technique, and as such, has advantages and disadvantages. It uses the rendered image, plus a Z Buffer (which tells the filter how far away each pixel is from the camera) to figure out which pixels are blurred or not blurred. Because its a 2D effect it has the advantage of being extremely quick. However there are a few disadvantages: Reflections are not blurred correctly. If you look at a reflection, you'll notice that the reflection's blur is based on the distance from the camera of the reflection plane, not the object in the reflection. Because the DOF is done on a 2D image, rather than a 3D scene, the blur cannot know what is behind any given object, therefore often the edges of an extremely blurred object in the foreground will look smudgy or dirty. On 06/02/07, Arjo Rozendaal <[EMAIL PROTECTED]> wrote:
Hi Timo, What does this material do exactly? I mean what's wrong with the regular DOF? Arjo. > -----Original Message----- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] Behalf Of Timo Mikkolainen > Sent: dinsdag 6 februari 2007 16:27 > To: [email protected] > Subject: Real DOF hack > > > I posted this in the forum a while ago, but I thought I'd post it here > as well: I made a little material hack that does real DOF: > http://koti.welho.com/tmikkola/materials/DOF.zip > http://koti.welho.com/tmikkola/materials/DOF.txt > > Read the readme for short instructions. > Naturally it won't work with post-blurred GI as it doesn't even copy > depth to the image... > I'd love to make a script that adds and choreographs the material to a > user selected camera, but I have no idea how to calculate the CoC > values from the camera properties. >
