Volumetric light without fog I'm using blender 2.8.

I was wondering is there any way to create volumetric light without fog (or just a little bit) ? There are some tutorials on Youtube but almost all of them are creating volumetric scatter to show the light paths but I don't want this. I just want sharp light paths.

Here are some images that are similar to what i want:
Try this 
The result 
You can parent the plane to the object that casts the rays, add to it constrain "Track To", choose your camera and play with constrain's settings. Also you can render it from another scene and than mix with original scene using compositor