Clamp

This node constrains, or clamps, values in the selected channels to a specified range. By default, it clamps all channels to values between 0 and 1. This can be useful for ensuring that the input’s blackest blacks and whitest whites will be visible on an intended display device, or for restricting data fed to a subsequent node that does not support numbers outside this range.

This node has an equivalent in Nuke.

Inputs and Controls

Connection Type	Connection Name	Function
Input	src	The image sequence whose values you want to clamp.
	mask	The optional image to use as a mask. By default, the effect of input src is limited to the non-black areas of the mask.

Control (UI)	Knob (Scripting)	Default Value	Function
Type name	TypeName	Clamp	The node type.
Enabled	Enabled	ticked	If unchecked, this node will be omitted from the compiled image processing graph. Any incoming connections will be forwarded to the first output port, if any.
Label	Label	N/A	An optional label to display on the node.
Parameters
Reset parameters to default value using the reset icon:
Clamp red	ClampRed	ticked	Whether to clamp the red channel.
Clamp green	ClampGreen	ticked	Whether to clamp the green channel.
Clamp blue	ClampBlue	ticked	Whether to clamp the blue channel.
Clamp alpha	ClampAlpha	ticked	Whether to clamp the alpha channel.
Minimum	MinValue	0.000	The lower clamp value.
Maximum	MaxValue	1.000	The upper clamp value.
Enable min. clamp to	MinClampToEnabled	unticked	If enabled, values falling below Minimum will use MinClampToValue instead of being clamped directly.
Min. clamp to	MinClampToValue	0.000	The colour values falling below the Minimum should be set to if MinClampToEnabled is enabled.
Enable max. clamp to	MaxClampToEnabled	unticked	If enabled, values falling above Maximum will use MaxClampToValue instead of being clamped directly.
Max. clamp to	MaxClampToValue	0.000	The colour values falling above the Maximum should be set to if MaxClampToEnabled is enabled.