[Bf-committers] DOF camera parameters.

[Alejandro Conty Estevez]

Filter used in yafray is not a gaussian blur. It is some kind of
weird progressive blur I figured out some time ago. But maybe it isn't
good enough. Some examples are shown here:

http://www.coala.uniovi.es/~jandro/noname/gallery/data/scrappy_0001.jpg
http://www.coala.uniovi.es/~jandro/noname/gallery/data/garbager_0001.jpg
http://www.coala.uniovi.es/~jandro/noname/gallery/data/hannibar_0006.jpg

You can see some artifacts here :

http://www.coala.uniovi.es/~jandro/noname/gallery/data/hexa-db_0002.jpg

but that's easy to fix, is just a background bug.

Some more examples:

http://www.coala.uniovi.es/~jandro/noname/gallery/data/grzybu_0002.jpg
http://www.coala.uniovi.es/~jandro/noname/gallery/data/basse_0001.jpg
http://www.coala.uniovi.es/~jandro/noname/gallery/data/wavk_0002.jpg
http://www.coala.uniovi.es/~jandro/noname/gallery/data/wavk_0003.jpg

And in this one, you can notice a slight blur jump that can also be
corrected:

http://www.coala.uniovi.es/~jandro/noname/gallery/data/hexa-db_0001.jpg

I'm not a zblur expert, so if anyone can provide a better filter, it
would save me some work.

jandro