Opposite Of Saturation Blend Mode

Hi!
Haven't been able to work out how to achieve the opposite of applying the saturation blend mode to some text on top of some footage.
Doing that makes the footage black and white where the text is, but i'm trying to achieve the effect of the text being the only source of saturation while the rest is black and white, if that makes sense?
Any ideas?
Cheers!

Comments

  • rgbii
    rgbii Posts: 965 Just Starting Out
    You can probably use your text layer as an alpha channel to mask to desaturate all but the text.
  • rgbii
    rgbii Posts: 965 Just Starting Out
    edited June 2013
    Also, if your text is the top layer, a grade layer under it could be used to desaturate everything but the text. This would be easier if your text layer happens to be higher than what you want to desaturate.