Hey,

I am trying to render objects with and without v and get motion blur. When I use velocity blur all the object with v blur and all the object with no v dont blur. If I swap that to no velocity blur the object without v get blur and all the object with v dont.

I would of thought when I switch to velocity blur all my object with no v would blur normally along with all the object with v.

First time in Solaris and Karma so maybe a workflow issue.

Here is simple attached scene with a box and sphere to show the issue.

Any advice would be great.

Im not 100% sure what do you mean by "when i use velocity blur", but looking at the scene, you can add a render geometry settings node after the sphere import and enabling the velocity blur. The set primvar will tell karma to use that for the sphere.