Re: History brush wont work properly
Hi
History states are lost when you save a file in Photoshop or most other programs. The history brush is not usually a good choice for this sort of thing for the reason you have discovered.
A better non-destructive method is:
Layer>New Adjustment layer>Hue saturation, set saturation to -100.
In the layer pallette, click on the layer mask of the Saturation layer to select it.
Paint with black - this will have the same effect as the history brush. Painting with white will reverse the process. You can also use gradient fills, etc.
The layer mask will remain active after saving and opening as a psd.
Layer masks are at the heart of working non-destructively in Photoshop - have a search for some of the tutorials on-line.
Brian
