The 3D Camera Tracker node in nuke is quite nice, but does have its limitations.В One of the cool things is that you can export individual tracking features as вЂњUsertracksвЂќ and use those as a 2D screenspace track.В However you can only select tracks from 1 frame at a time and you can only export a maximum of 100 tracks in one single node. Update: Nuke 8 fixed / added some of this functionality. Trying out Nuke Blink Script April 29, 2014 There are still a few adjusments to do, but sofar im pretty sattesfied with the result.

Input Image вЂ“ The image to apply the effect to.

Direction Vector вЂ“ This map defines the direction that the bokeh should face,В I have included anoter blink node that creates the default 360 map but you can make it face any direction you want.

Depth Map вЂ“ Depth map, but can also be used for masking.

Filter Input вЂ“ Changes the look of the bokeh.

So i decided to make a new Z-Defocus node for Nuke that generates swirly bokeh, and thanks to the new Blink Script node and the convolve examples provided byВ The Foundry this was a rather easy task to accomplish. If you look at this imageВ you can clearly see how the bokeh circles at the edges of the frame are вЂњfacing awayвЂќ from the center of the image (also referred to as вЂњonion bokehвЂќ), and this effect is occurring quite often. And most lenses have alot of вЂњswirlвЂќ and distortion in their bokeh. They all mimic the perfect optical element alignment in a lens. Not only is it an artistically interesting effect, it also raises a problem with Defocus, Z-defocus, Convolve and pgBokeh nodes alike. PETZVAL-MODв„ў- 58MM F2.0 (W/ MODIFIED ELEMENTS) from Jason Bognacki on Vimeo.

I contacted Jason and bought one of his modded lenses for me to study and play around with.

I remember seeing this video from Jason Bognacki for the first time and immediatelyВ thinking вЂњWowвЂ¦ I must replicate that effect in NukeвЂќ.

Zdefocus nuke 10