ABSTRACT
A critical component of digital compositing is the proper selection and conversion of color spaces. Failure to take color space into account can lead to composites with mismatched color values or color artifacts. In addition, image formats vary in their fundamental mathematical makeup, leading to additional concerns as files are imported into Nuke and written out to disk. Once the technical aspects of color space and image format conversion are mastered, aesthetic color adjustments remain. Such adjustments fall under the auspice of color grading. Nuke offers a wide range of color filter nodes that allow a person to undertake color grading within the program. Computer monitors operate in a nonlinear fashion. That is, the relationship between voltage and brightness is not 1-to-1. This relationship is represented by a gamma curve, whereby the voltage is raised by the power of gamma to increase the brightness.
