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combining a 2D plate with it’s related tracked 3D camera
Hi guys,
ok, i will try to explain this best i can:I am trying to place an actress in a 3D bubble which is built up from semi-transparent, refracting material. The sphere is rotating, creating some nice distortion effects. This all works fine if the camera is static (my keyed footage is then just placed on a plane), but i have several shots with camera movements and I have to match them up with the sphere in 3D space.
I have tracked the camera in syntheyes and imported it into C4D, added my elements, all sweet. BUT… to add refraction I think I must somehow place the 2D footage in 3D space! placing it on a layer (even if it is auto-orienting) does not work as soon as the camera moves closer, i.e. changes its z-position.
This to me seems like a common issue in film productions: tracking a scene and adding CG elements that rotate around, say, an actor – how is this done?!?
thanks for your help!!
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2 Replies
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Hey Nils…did you try placing that 2d footage as an environment on a material?
just go to the material editor and make sure you put a check on environment and then place your 2d footage there…hope that works for u -
Hey sharif,
thanks for your reply.Yes, i have tried that. It gets pretty close, but the thing is that the environment is behind the sphere and thus not affected by the refraction of the material. My actress is supposed to be IN the sphere. Also, there will be an scene built around here (wall planes etc.), so that you cannot see the background all the time.
I will upload some screens later this day that maybe help clarify…
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