Separate Alpha
Separate Alpha
Use Separate Alpha to isolate transparency from color for targeted edits. It is commonly used to clean masks while preserving RGB detail.
Availability
This node is available in the free feature set.
Common uses
- Place channel nodes after generators and before final output shaping.
- Use histogram and levels tools to isolate useful ranges for masks.
Input ports
-
input -
Usually expects one image input, with optional secondary inputs for some nodes.
Output ports
-
out -
Outputs modified image or channel data for downstream processing.
Parameters
This node has no shared processing parameters.
Behavior
- These nodes remap values rather than creating major new structure.
- Channel operations are useful for converting outputs into mask-friendly ranges.
Common mistakes
- Stacking many remap nodes can flatten contrast unexpectedly.
- Watch channel assumptions when mixing grayscale and RGBA signals.