I’m loving these recent tutorials from Joe Raasch, and with this new addition, joe looks at creating a lens blur and bokeh effect in NUKE using the new zDefocus tool. This is a new addition in NUKE 7, replacing in essence the convolve and defocus tools in earlier versions.

Over the years, I’ve had many a supervisor ask me ‘is that a blur or a defocus’? At the time, I thought a blur and defocus were the same thing. If I would have done any research into this, it would have been very obvious that there’s a huge difference

What is interesting is the comparisons that Joe creates using a blur versus using a defocus and the difference between the two respectively using unfocused photographs as a base-line.

Joe also takes a look at creating a defocus effect in earlier versions of NUKE with convolve and Defocus as a comparison, and shows how to apply the new zDefocus Tool to an image that has no embedded “z” or depth information, and an image that does have depth information assigned.

Learn more about the NUKE zDefocus Tool here, and check out Joe’s tutorial for Using zDefocus in NUKE for creating Lens Bokeh Effects here.