In PS, I use levels to crank on my mask ... pushing those grays to black and those whites stay white.
I\'ll also create my mask from channels, where I can get increased separation by choosing say the blue channel. This can include inversion at times, but I find channel masks (thanks to mshi\'s recommendation @ Channel Chops) very valuable at getting a head start on such separations ... then dialing them in to where I want them.
The marching ants only show where the 50% line is (iirc), so yes you do have areas beyond the marching ants that are affected. This is why I crank my mask using levels. I can take it to a black & white state (or nearly so as I choose), then feather the mask for the rate of transition I desire, or leave it hard edged. Might need some brush work to fill in certain areas, but it does pretty good job at getting you the separation that the 50% marching ants doesn\'t show you extending into the gray areas. Just convert your unwanted gray areas to black, and you\'re in pretty good shape.
BTW ... Channel Chops came highly recommended to me and I second it wholeheartedly if you\'re gonna work with masks.
Apr 13, 2013 at 09:54 AM
Previous versions of RustyBug's message #11482866 « Modifying a luminosity mask? »
