This effect/filter adjusts shadows, midtones and highlights of an image using curves. It is similar to the Color Levels or Levels effects but with the option to create additional points along the curve allowing for pinpoint accuracy when adjusting brightness values.
This filter does not have keyframes.
Channel - Set the channel to which the curve applies. Options are RGB (default), Red, Green, Blue, Alpha, Luma and Saturation.
Luma formula - Set the color space in which the application takes place. Options are Rec. 709 (default) and Rec. 601.
In - Set the Input value
Out - Set the Output value
Graph position - Select the position for the graph. Options are Top left, Top right, Bottom left and Bottom right (default).