From KDE UserBase Wiki


    This is the Frei0r.sigmoidaltransfer filter from Janne Liljeblad.

    Desaturates image and creates a particular look that could be called Stamp, Newspaper or Photocopy.

    Two parameters:

    Brightness: Controls Brightness of image. Range 0 to 1

    Sharpness: Controls sharpness of transfer Range 0 to 1

    Both parameters default to 0 in Kdenlive - which is unfortunate because this results in a totally black frame. You need to have numbers above zero to see the effect.

    This effect appears to have arrived with version 0.9.5 of Kdenlive