The Color > Black & White converter effect

The Black & White Converter effect has three parameters that may be locked using a FX Stack keyframe. By default, it transforms the images by deleting the color data. We therefore obtain the same effect as photos taken with a black and white film.
Increasing the value of the Red parameter will make the red pixels of the original image lighter when changing over to gray. Reducing the value will make them darker (see below).
The same principle applies to the Green and Blue parameters.

Default settingsParameter Red at value 0Parameter Red at value 255

Below, a zoom on the red area of the image :

Default settingsParameter Red (value 0)Original imageParameter Red (value 255)