Grass clump.

[cyphyr]

Yes that is exactly how the RTP works. Basically the less it previews the faster it works. Switching texture, atmosphere and lighting on or off in the preview allows you to see what you need as fast as possible.

[Nathan.c]

Ok. Thanks for the help 

[sboerner]

It's a good idea to make small test renderings from time to time, as in Dune's example. Especially when the 3D view doesn't seem to be making sense. Just use low quality settings and a small image size (or crop) so they go quickly.

I keep a spare "roving" camera handy just for this, so I don't have to disturb the placement of the main camera.