edit...
And with a layer mask, if black and white, you can use curves or levels on the mask to fine tune the edges.
or you can blur it, or go [fitler->generic->dialate or erode] or [filter->noise rgb/spread/or whatever] . . .use your imagination.
Blighty's advice is good and solid, but using the COLOR TO ALPHA is usually a last resort option for me.
The point is this is all non-destructive. If you don't like it, delete the mask and start over. Color to Alpha destroys information.
And with a layer mask, if black and white, you can use curves or levels on the mask to fine tune the edges.
or you can blur it, or go [fitler->generic->dialate or erode] or [filter->noise rgb/spread/or whatever] . . .use your imagination.
Blighty's advice is good and solid, but using the COLOR TO ALPHA is usually a last resort option for me.
The point is this is all non-destructive. If you don't like it, delete the mask and start over. Color to Alpha destroys information.