anti-aliasing & feathered edge for a selection tool

Photoshop anti-aliasing:

1. Select the lasso, polygonal lasso, magnetic lasso, rounded rectangle marquee, elliptical marquee Or magic want tool.
2. Select Anti-aliased in the Options bar.












Photoshop feathered edge for a selection tool:

1. Select any of the lasso or marquee tools.
2. Enter a Feather value I the Options bar. This value defines the width of the feather edge and can range from 1to 250 pixels.