User Manual

Pixel Aspect
This control is used to specify the Pixel Aspect ratio of the created images. An aspect ratio of 1:1
would generate a square pixel with the same dimensions on either side (like a computer display
monitor), and an aspect of 0.9:1 would create a slightly rectangular pixel (like an NTSC monitor).
NOTE: Right-click on the Width, Height, or Pixel Aspect controls to display a menu
listing the file formats defined in the preferences Frame Format tab. Selecting any of
the listed options will set the width, height, and pixel aspect to the values for that
format, accordingly.
Depth
The Depth drop-down menu is used to set the pixel color depth of the image created by the
Creator node. 32-bit pixels require 4X the memory of 8-bit pixels but have far greater color
accuracy. Float pixels allow high dynamic range values outside the normal 0…1 range, for
representing colors that are brighter than white or darker than black.
Source Color Space
You can use the Source Color Space menu to set the Color Space of the footage to help
achieve a linear workflow. Unlike the Gamut tool, this doesn‘t perform any actual color space
conversion, but rather adds the source space data into the metadata, if that metadata doesn‘t
exist. The metadata can then be used downstream by a Gamut tool with the From Image option,
or in a Saver, if explicit output spaces are defined there. There are two options to choose from:
 Auto: Automatically reads and passes on the metadata that may be in the image.
 Space: Displays a Color Space Type menu where you can choose the correct color
space of the image.
Source Gamma Space
Using the Curve type menu, you can set the Gamma Space of the footage and choose to
remove it by way of the Remove Curve checkbox when working in a linear workflow. There are
three choices in the Curve type menu:
 Auto: Automatically reads and passes on the metadata that may be in the image.
 Space: Displays a Gamma Space Type menu where you can choose the correct gamma
curve of the image.
 Log: Brings up the Log/Lin settings, similar to the Cineon tool. For more information,
see Chapter 36, “Film Nodes” in the Fusion Studio Reference Manual or Chapter 84 in
the DaVinci Resolve Reference Manual.
Remove Curve
Depending on the selected Gamma Space or on the Gamma Space found in Auto mode, the
Gamma Curve is removed from, or a log-lin conversion is performed on, the material, effectively
converting it to a linear output space.
Chapter –89 Generator Nodes 2009