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Hi all - trying to figure out how to get accurate motion blur across long shutter times, no matter what combination of settings we use it seems that V-Ray will only sample the velocity of the specific frame that is being rendered. Images attached showcasing this. If an objects is moving along a curved path we should be able to get accurate curved motion blur, not just a longer motion trail on that specific vector for that frame. Anyone got a solution?
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Have you tried increasing "Num. samples" after adding V-Ray object properties to the object? -
Gave this a shot but no dice unfortunately, are you also seeing this issue on your end with translating objects? Rotation works fine ie. spinning helicopter blades.Comment
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It'll be easier to help if you could attach (or send to the email in my signature) the .hip file.Comment
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HI frame48 , seems to work fine in Houdini 20.0.590 and latest nightly of V-Ray 6.2 . What is your OS, Houdini and V-Ray versions?
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Hey Georgy - I just updated to 20.0.590 and the latest nightly to test - same issue. Scene file and image attached.Attached FilesComment
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This could probably be improved, but as a workaround you could set "No Velocity Blur" and use geometry samples directly.Comment
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Does my scene produce the same error on your end? It seems to not be working at all, making fast motions look pretty poor. Could you provide a little more context on the no velocity blur approach you're mentioning? Thanks so much.Originally posted by bdancer View PostComment
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> Could you provide a little more context on the no velocity blur approach you're mentioning?
Just set "Geometry Velocity Blur" to "No Velocity Blur", this way only animated point samples will be used.Comment
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