[![enter image description here][1]][1] The Z pass is only defocussing inside the boundaries of the Tea Caddy. I presume this because the Caddy is divided against the background? Is there a way to extend the defocus effect of the edges of the object so it fits naturally into the scene?

[<img src="https://blend-exchange.giantcowfilms.com/embedImage.png?bid=5474" />](https://blend-exchange.giantcowfilms.com/b/5474/) 


 [1]: https://i.sstatic.net/qFhfh.png