Autodesk Combustion has an extremely powerful tool – 3D fog for simulating and rendering realistic fog in your compositions. But 3D fog uses a Z-Depth which is usually obtained from 3D software packages like Maya or 3D Max while rendering. What if you working on 2D composite and need finish it quickly. To speed up things you can use pre-made fog footage. So whenever you want to composite fog onto footage, you can just make use of this footage.
Skin retouching is mostly used for photographs, but rarely used with videos. Doing it with photographs is much easier than with a video. A photograph is a single image whereas a video is made up of many such images called frames and each frame is dissimilar to each other. There could be 15 to 30 frames in a one-second video. Thus making the task of skin re-touching in a video near to impossible. In this tutorial, we will see how to re-touch skin of an actor to remove blemishes and scars with the help of Autodesk Combustion 2008.