The Extractor works better in Photoshop Elements than PS2, but it's been my experience that manually defining a path for the basis of selection work is unparalleled in quality. I've tried Knockout and Extensis' "extractor", and neither really impressed me for the price point.
Here's a few tricks for tricky selections:
+sky replacement: the Magic Eraser can separate treetops, but leaves fringing even after using Defringe. So you lock the layer, choose a tree edge color, and paint in Darken mode.
+Hair: Chop off loose strands and then paint them back in after your selection work using a 2 pixel hard brush tip. For other areas, erase using partial opacity, then use the tree trick to paint away fringing.
My Best,
Gare
Here's a few tricks for tricky selections:
+sky replacement: the Magic Eraser can separate treetops, but leaves fringing even after using Defringe. So you lock the layer, choose a tree edge color, and paint in Darken mode.
+Hair: Chop off loose strands and then paint them back in after your selection work using a 2 pixel hard brush tip. For other areas, erase using partial opacity, then use the tree trick to paint away fringing.
My Best,
Gare