i’m trying to render an animation containing lots of smoke in for a dome, meaning for each frame i render 5 camera views perpendicular to each other (like front, right, back, left and top). each camera has a viewing angle of 90° (at least i’m pretty sure they do… i use a 16mm or whatever unit that is lens). what i’d expect: when i render the 5 camera views and put the image together, everything is smooth and fine. what i get: the particles seem to have slightly different positions for each render, resulting in visible transitions between the cameras… so, what i would need is a way to make sure that, once my scene is set up, the particles move along the same tracks until the end of time, for each render in each camera. anyone here who can help me?
you might want to look into Pano mode to get a seamless panoramic view of the action, which I think is what you are trying to get with the 5 cameras. You can control when each particle set starts to emit using the Particle controls on the buttons panels. BUT the particle is in a certain location at a given frame; unless you have random seed turned on, they should render the same way twice. If they appear to be in a different spot from two different cameras, it is because the two cameras are not in the same location, and you have parallax because of geometry. You might try just rotating a single camera 90 degrees and re-shooting.
thanks for the fast reply. Here’s the problem: each particle emitter has ramdom seed set to 0, AND I use just a single camera, which I rotate by 90° for each render. And as far as my understanding of rotating is concerned, this shouldn’t affect the camera position, meaning that a parallax can be ruled out - unless blender handles the rotation in a somehow strange way internally and I get some parallax effects which I cannot control. Is that possible? Just don’t have another explanation for all that right now…