Hi Pedrith, Ambitious project. ;) Everything you mention is possible but there is a reason that animation companies create render farms with many machines. I'll suggest that you've over-set your render settings. Detail/effects that are apparent in still images are far less apparent with motion involved. So, setting the render using the "best" settings everywhere is not a good idea. Especially, if you're doing a NTSC or PAL TV frame, edge detail is totally lost so anti aliasing doesn't need to be too tight. Animation IS compromise. For animation sequences I work on, my usual target for frame render time is about 3min. max. You can still get great results with a 3 minute target but it does take a little experimenting. While experiment test renders can take sometime to work out, it will save days of render time.Only stuff like transparency or caustics will drive that up so I try to avoid those if possible. Answers to your questions by number: 1) Apply as a texuture to a plane (must be rendered with an alpha map and imported as a 16 bit Targa file or rendered as an image with a separate alpha map placed into the alpha channel) If you use Carrara's Replication feature, your really shouldn't have to worry about doing the alpha map thing. 2) Using Transposer, you can loop the animation by duplicating the start/end keyframes. 3) Again, use duplicated key frames in the texture channel for whatever method you've used. Personally, if I'm using a rotoscoped movie to drive a displacement map, it's fare easier to create a looping movie in a move editor and then simply place the movie with the "right" length as a texture map into the dispacement channel. 4) Render your Bryce sky with the spherical camera and import as a Background, not a Backdrop - then don't load a Bacdrop. You will need to render it out at a pretty high resolution although. You can map a Spherical Camera Render to a very large sphere and and duplicate the texutre map into the Glow channel in Carrara so it illuminates. Everything will need to be lit with spotlights or with distant lights with shadows turned off so that they illuminate "through" the sphere, however. Just a little unsolicited advice: carefully storyboard your animation. Most action sequences are a complex series of fast-cuts with no one camera used for more than about 1-3 seconds. Even "calm" subjects, TV sitcoms, TV news etc, seldom show a single camera reference more than about 5 seconds. People get visually bored very quickly. Doing this will keep your final movie fast paced and make it easier to render and edit afterwords. Long render sequences 15 seconds+ is begging for problems. Mark