Color spaces can come in different sizes and shapes. Renderings intents are used to determine how colors are transferred (rendered) from one color space to the other.
In SilverFast 8, these 4 rendering intents are available:
Since "Perceptual" is the rendering intent which suits films and photos of all types, this is the best choice for all common scan projects and thus is the only rendering intent used in SilverFast 9.