Defocus Node - using it wrong?

I tried using the Defocus node in composite nodes to produce a lens blur effect. All it did is break up the picture into a bunch of little dots. It kind of looks like blur from a very long distance, but it looks really bad. Is there anyway to perhaps increase the # of dots to make it look more like real blur?

Attached is my picture and settings.

Any suggestions about how to properly use this node would be appreciated.



In your defocus node settings, the preview button is there for just the purpose you’re talking about. It simplifies the results of the blur so you can see the results of different settings faster.

To do a final render with nice blur, simply depress the preview button, wait til it gets done showing you the results in your node viewer, then render!

Hope this helps.

ah! thank you!