this effect is so important effect in the camera's view so it will be awesome in the 3d animation movies
so i was just trying it and this is the result and want to show it to you.
i hope you like it.

Nice Depth of field effect.
 
yafray ?

Heh, I like that one too. Even though it is kinda creepy with all of the monkey heads. It's hard to tell if they are happy or scared

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truth no its the original blender render engine and with nodes
tanshin lol... its just a sample to show the effect only

and defocus means to focus on object or a place only and all the rest are blur (defocus).

It looks very nice indeed. Can be great in a movie or image.

ya you are right gruzz, as i said in the main post (topic): this effect is so important effect in the camera's view so it will be awesome in the 3d animation movies