LogC
Function
This function performs a Linear to Log conversion. You can adjust the
black and white points, gamma, and do color adjustments. All values are
in between 0 to 1023.
Parameters
|
Type
|
Defaults
|
Function
|
Offset |
float
|
0,0,0
|
These values offset the individual
color channels. |
black, white |
float
|
90, 685 |
These set the black and white cutoff points.
The default values are 95 and 685. |
nGamma |
float
|
.6 |
The film negative gamma. The default is
.6, as per the standard Kodak specification. Generally, this number
is not touched, unless you use a non-standard film stock. |
dGamma |
float
|
1 |
The display gamma to compensate for the
monitor's lookup table. By default, this number is 1. |
softClip |
float
|
0 |
The rolloff values on the white point.
Default is 0, which gives a Linear break. By increasing this value,
you smooth the curve out. |
Synopsis
image LogC( image,
float rOffset,
float gOffset,
float bOffset,
float black,
float white,
float nGamma,
float dGamma,
float softClip
);
Script
image = LogC( image,
rOffset, gOffset, bOffset,
black, white, nGamma, dGamma
softClip
);
Command Line
shake -logc redOffset greenOffset blueOffset etc...
See Also
DelogC
|