That should be, shoot it at 60i and render 24p. To get smooth slow motion, you must start by shooting at a high frame rate. 24 is barely fast enough as it is.

Great advice.... the problem is that the horse left the barn already. It was a 1-time event, where I was taping young students who had spent time with Holocaust survivors, told their stories to the audience, and then demonstrated an artistic interpretation. One was a dance. In the midst of wearing many hats that day, the last thing I was thinking of was changing the frame rate. Any post-production steps that may help?

I don't have any experience doing this with 24p but if you have After Effects available to you it does pixel by pixel interpretation between frames which produces a better quality than you can get with Vegas slomo.

Jerry

I read that somewhere else just about an hour ago... I'm going to have to give that a shot.

The weirdest thing is that I've been watching this for weeks in the Vegas preview window --- at full 23.976 fps preview -- and it's been very smooth, much smoother than with the render itself. That's what is confusing me. I'm wondering if it's an issue of the render settings of how I'm telling Vegas to render the frames or between the frames.