https://i.ytimg.com/vi/mnXaD700bOk/hqdefault.jpg http://www.blenderhd.com/ Learn the secret to rendering realistic smoke in Blender! Handy light cache comparison:http://blenderartists.org/forum/attachment.php?attachmentid=222198&d=1363052495 And a density scale comparison: http://blenderartists.org/forum/attachment.php?attachmentid=222199&d=1363053139 Remember: For large scale smoke, the higher you set the light cache, the better your result will look, and the longer it will take to render! My settings for the billowing smoke seen on…