I'm still experimenting with Vue 8. I'm slowly building an underwater scene and this is an experiment on a small part of it. The gels that came with Vue didn't work for me so I made my own. I now like the way the light and shadow shows on the sand. I am not happy with the grainyness (is that even a word?) on the rays showing in the water. I have upped the quality in the caustics panel but it still looks wrong to me. Anybody have any ideas on what else I could try?

Tony

You probably have to increase the quality of the volumetrics of the light source. Double click the light source, go to tab Volumetric and increase the quality boost. Render will be slower, of course, but grain should decrease.
Hope that helps.

By the way, if that's a gel, increasing the caustics quality produces no improvements because you're really not using any caustics, you're using a gel. You could disable caustics altogether.

It is a gel. I'll try what you suggest, thanx!

In your render options, uncheck "optimize volumetric lights" if it on. Then you shoud not need too much quality boost.