By the time Speed Racer is smashing this summer´s box offices I thought it might be nice to finish a tutorial I started about a year ago :-) It´s a small people tutorial and the renderings are far from photoreal but it gives you and idea of what can be done in post production…
The images above are done from ONE SINGLE 3D rendering session providing all the passes we need to change pretty much everything in post without re-rendering in 3D which can eat production/render time when the customer is a bit moody with his decisions...
The layers I rendered as well as the After Effects Project file are all featured in this tutorial and can be downloaded here: Project and Render Files
I wouldn´t go any deeper into After Effects or provide the Max file since this an intermediate compositing tutorial. You can read about Ambient Occlusion, Falloffs and Blend Options in your Max/After Effects Help yourself ;-p No basics covers, I´m sorry. So let´s go!
Step 1: This tutorial works with simple tricks! Nesting Compositions into each other and setting Mattes (called knock out layers) with alpha and falloff passes we rendered.We start with a new Composition and drag the Ambient Occlusion rendering into it. An additional added Brightness&Contrast can be used to eventually adjust the layer to have more or less AO going on.
Step 2: Our base coat layer, believe it or not, consists of two color solids! I add Hue/Saturation to both of them and adjust the colors to my desire by shifting the color, saturation and lightness. Having 2 different color solids creates the chamelion look later ;). I use the Carpaint Falloff rendering to blend them nicely into each other. An additional Brightness &Contrast can be used to modify the hardness of the Falloff.
Step 3: Since the color Solids are still full screen we need to use a matte to cut out the car body. Drag the whole Base Color composition into a new composition and use the Carpaint Mask rendering as Luma Matte. The Carpaint Mask is actually a B/W rendering with a white self-illuminated material applied to the car body. The rest of the scene has a black self-illuminated material applied. The result is a nice mask.
|
|
|
