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Fire, explosions and smokestacks were mostly done with fume, the clouds were generated with an inhouse tool called "secondDay", wich is based on camera projection and vertex coloured imposters.
To shed some more light on this topic... This is the VFX reel for the feature "Der rote Baron" aka "The red Baron". We had to complete about 450 shots from 08.06 - 04.07 including r&d.
Nearly all the airplanes and environments are full CG, only some of the foreground airplanes are mockups, in most cases it should be visible (in nine air combat shots you'll find a non CG airplane). As for the airfield shots. where only the first tent and the first plane (first two planes in the second) are real.
No plane nor the camera ever left the ground.
what were render times like?
what did you use for antialiasing? i.e adaptive qmc, or adaptive subdivision
did you use gi? if yes what kind.
How much post processing was done?
Overall verywell made I still havent watched the movie...going to now
Just to clarify: the date 08.06 - 04.07 i was mentioning should probably rather read 08.2006 - 04.2007 , so i got some sleep, but several coffeemachines died while production.
From the technical side, it was all straight forward. The basic approach is to rely completely on qmc and lwf. So usually it was adaptive qmc 1-50, and a noisethreshold of 0.008 (RC2), though leaving adaptive amount at 0.8 to be able to still influence in certain situations (what we basically never did). All shaders of the airplanes were set up and normalized to work together in all lighting conditions (pointlights, domelights, gi). Lighting setups for the the different airbattles were scripted, imported by a mouseclick and automatically aligned to the previs to assure light continuity.
We were using nearly all physical effects: glossy reflections, gi (qmc primary and secondary) and motion blur on all shots, dof on some prominent ones, all rendered at 2k (2048x872). Rendertimes were ok, the main layer of the handley page (the plane with the burning engine and the pilot shot at about the middle of the clip) was about 1.5h on a single 2.4ghz dualcore.
We were extensively using Vray elements, using a unclamped 16bit float exr pipeline to achieve best control in compositing. The amount of compositing was varying a lot from shot to shot, but mostlyl renderings were pretty close to what you see in the trailer.
So many questions.. ahh.. I assume all planes in the air were CG.. just wow.
The blimp was that CG as well? if so what cloth sim did you use. Looks great.
The flaming planes were the flames CG as well? or comped footage? <edit> just read above.. fumefx.. fantastic.
Therefore .. requesting a fumefx tut from you
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