Hello everyone.

I am having a little trouble trying to create "internal Volumetric Lighting" at the moment. I have been following a video tutorial by our "Mark Bremmer" which is great but I keep getting a segmented look in the render as the image shows. I am wondering if anyone can give me a reason why this is happening. I am using carrara7pro, a distant light and hdri map.

Any help would be greatly appreciated.