I shall talk about some practical problems of special effects / animation production that could be broadly defined as Inverse Problems: data is recovered from observed images rather than generated on user specification. Most of Computer Vision tasks in movie production, opposite to most Computer Graphics tasks, fall in Inverse Problems category. The problems I will speak of are: rigid body surveyless, articulated body (as hierarchy of rigid objects), face and flexible surface tracking (markers based, markerless, featureless) and photomodelling including what is practically important for our industry in algorithms development and our expectations. Automatic 3d terrain generation from monocular camera image sequence will be presented as an example of discussed problems and solutions.