User Manual

Table Of Contents
Generate: Lets you choose whether you create a soft-clip LUT as a 1D or 3D LUT. 1D
LUTs are more accurate for this operation, using 1023 data points, as opposed to the
33x33x33 cube of the 3D LUT.
Generates LUT based on: Defaults to “No LUT selected,” which generates a soft clip
LUT using only the settings within this panel. Choosing another LUT from the list lets
you concatenate the calculations you specify in this panel with the selected LUT, thus
outputting a single LUT that applies both sets of calculations all at once.
Scaled to clipping range: Enables the Maximum and Minimum settings below to work.
Maximum video level: Sets the maximum value that will be output. All image data
above this value will be clipped.
Upper Clipping softness: Sets the threshold, as a percentage below the clipping point,
at which highlights in the image data begin to compress before hard clipping. At 0, no
soft clipping occurs. As you raise this value, more of the clipped highlight values are
compressed, rather than clipped, resulting in softer, more pleasant “glowing” highlights.
Minimum video level: Sets the minimum value that will be output. All image data below
this value will be clipped.
Lower Clipping softness: Sets the threshold, as a percentage above the minimum
clipping point, at which shadows begin to compress before hard clipping. At 0, no
soft clipping occurs. As you raise this value, more of the clipped shadow values are
compressed, rather than clipped, resulting in a softer, more pleasant rolloff in the toe of
the shadows.
Save LUT as: A field into which you can enter a name for a Soft Clip LUT you
wanttosave.
Generate LUT button: Click this button after entering a name in the Save LUT as field
to save a Soft Clip LUT.
Here’s a procedure for creating a Soft Clip LUT using the controls in this area.
To create a Soft Clip LUT:
1 Open the Project Settings and open the Lookup Tables panel.
2 Choose the settings for the Soft Clip LUT you want to create.
3 Type a name for the new LUT in the “Save LUT as” field, click “Generate LUT.
4 The new LUT is saved in the default directory for your system, and is now available in
the LUT drop-down menus of this panel.
Generate LUT From Analyzed Pattern
This somewhat hidden command allows you to analyze a special test pattern in order to derive
a LUT from whatever adjustments were made to that image. It relies on the use of the
trim_lut0.dpx” file that’s located in one of the following directories:
On Mac OS X: Library/Application Support/Blackmagic Design/DaVinci Resolve
On Windows: C:\ProgramData\Blackmagic Design\DaVinci Resolve\Support
On Linux: /home/resolve
This procedure is most useful when you want to reverse-engineer an adjustment that’s being
made via a third-party application. Be aware that it’s only useful for analyzing primary
adjustments, such as lift/gamma/gain style adjustments, saturation adjustments, or curve
adjustments. Secondary adjustments and filters such as blurs or sharpen operations cannot be
analyzed, and in fact may cause an incorrect analysis.
Chapter – 4 Project Settings 161