![]() ![]() We will demonstrate how to generate motion vectors for the cases where it is desirable. However, it can be sufficient in some cases. This type of motion blur is lower fidelity it does not capture lighting changes as an object moves, nor complex interactions of depth relative to the camera. In some cases where there are severe time constraints, it may be faster to instead output motion vectors and blur the images in a compositing package afterward. This requires using more AA samples to resolve noise from motion blur, but often those samples are needed anyway for noise resulting from the depth of field, direct and indirect lighting, volumetrics, and so on. Motion blur in Arnold is generally best accomplished by using the natural motion blur support, where transforms and vertices of objects are sampled over time from a camera's shutter open to shutter close. Motion blur using the motion_vector AOV (rollover image)
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