User Manual

TIP: 3D rendered CGI images are often generated as EXR files with linear gamma, and
converting them is not necessary. However, you should check your specific files to
make sure they are using linear gamma.
Fusion includes several kinds of nodes you can use to convert the image out of each MediaIn
or Loader node to linear gamma at the beginning of your composite, and then convert from
linear back to your desired output gamma at the end of your composite. These include:
 CineonLog node: The CineonLog node, found in the Film category of the Effects
Library, performs a conversion from any of the formats in the Log Type menu to linear,
and also reverses the process, adding log gamma back to a clip. This is most often
used for images coming from common digital cinema cameras like BlackMagic Design,
Arri, or Red. The CineonLog node is added directly after a MediaIn or Loader node. The
Mode menu chooses the direction of the conversion to or from linear.
Add a CineonLog tool to convert log
gamma curves to linear and vice versa.
 Gamut node: The Gamut node, found in the Color category of the Effects Library, lets
you perform linear conversions based on color space. This node converts to linear
or from linear and is often inserted after a MediaIn or Loader node or just before a
MediaOut or Saver node.Depending on where you insert the node, you either choose
from the Source Space controls or the Output Space controls.
Add a Gamut tool to convert gamma
curves to linear based on color space.
Chapter – 68 Managing Color for Visual Effects 1371