Friday, 14 July 2017

Nuke: Zdefocus and shuffle nodes


Final renders all downloaded from the render farm!
Now into compositing using both Nuke and After Effects.
My render files are open_exr files, all with associated passes.
Using Nuke and the 'shuffle' node, plus a colour correct node, I can adjust the levels for each pass.
Below, final render shot in Maya - showing the perspective panel and geometry and a render test
Nuke interface using a background node (lilac rectangle) to differentiate between node groups
Colour correction node (highlighted in pale yellow), using the ID pass
Colour correction node [tab>colorcorrection] outlined in red - applied to the specular pass. Double clicking on the colour correction node, brings up the properties dialogue box and then I can adjust the levels
First view of the composited image 
Selection of the 'reflection node' (highlighted yellow) and then press '1' shows just the reflection pass in the viewer. I can then adjust the properties to suit
Zdefocus node, with an inverted node applied. I can then alternate between the 'result' and 'focus plane set up' to adjust the focal point and create a 'tilt shift' effect. The red areas of the tree are closest to the camera, the blue furthest away (therefore having more blur) and the green is the focal point. 
Dialogue box (highlighted in cream on right) explains the focus plane set up
Composition still, showing the 'focal point' centre.
Next step is to import into After Effects and create some light rays

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