User Manual

Controls Tab
The Controls tab for the OCIO CDL Transform contains primary color grading color correction
controls in a format compatible with CDLs. You can make R, G, B adjustments based on the
Slope, Offset, and Power. There is also overall Saturation control. You can also use the Controls
tab to import and export the CDL compatible adjustments.
Operation
This menu switches between File and Controls. In File mode, standard ASC-CDL files can be
loaded. In Controls mode, manual adjustments can be made to Slope, Offset, Power, and
Saturation, and the CDL file can be saved.
NOTE: Using DaVinci Resolve terminology, slope is similar to gain. It controls mids-to-
high contrast. Offset is the overall offset of color balance and exposure. Power is very
similar to contrast with a raised pivot, giving you control over shadow contrast.
Direction
Toggles between Forward and Reverse. Forward applies the corrections specified in the node,
while Reverse tries to remove those corrections. Keep in mind that not every color correction
can be undone.
Imagine that all slope values have been set to 0.0, resulting in a fully black image. Reversing
that operation is not possible, neither mathematically nor visually.
Slope
Slope multiplies the color values; this is the same as Gain in the Brightness Contrast node
Offset
Offset adds to the color values; this is the same as Brightness in the Brightness Contrast node
Power
Applies a Gamma Curve. This is an inverse of the Gamma function of the Brightness
Contrast node.
Saturation
Enhances or decreases the color saturation. This works the same as Saturation in the
Brightness Contrast node.
Chapter – 85 Color Nodes 1891