Effect: Mask Extract, Blue, Midtones

Description
Extracts a mask from the blue midtone region of a clip. The selected brightness range is represented graphically in the small preview window. This is useful for extracting and tweaking a mask to be used for compositing.

Controls

Threshold:		Determines the extent of the selected region.
Range:		Determines the sharpness of the edge of the selected region.
Boost:		Multiplies the intensity of the mask, making it brighter.

Examples

Original image.	Extracted mask