I find it difficult to modify a selection (like subtract from it) if there are very many pieces to the selection.
I have a png image about 1200 * 1000 px I use magic wand select globally and get a selection with probably thousands of islands. I want to remove some of these islands and try to deselect with the rectangle tool but after I set the first corner PaintdotNet chokes and it takes litterally several minutes befor I can set the second corner of the rectangle. Forget about trying to draw a deselection with the lasso tool...
Any suggestions?
2,4GHz QuadCore 3,5GB RAM Windows XP