I don’t know how many times I selected an area and then realized that I meant to select everything outside the area, like I want to delete the background, not the object. At that point I would deselect and start over. Sometimes the selected shapes would be complicated and I would lose precious minutes of work time.
Of course there had to be a way to invert the selected area and it’s taken me this long to get off my butt, sit down down on my butt, and search the web for a the solution. Here it is.
First an example of having the wrong area selected.
The magic combo is shift+command+i. That will invert the selected area. You can tell it worked because there’s also a column of ants marching around the border of the image.
Hit delete and the offending pixels are gone.
But wait there’s more. If you press shift+command+i+delete (that is, all four keys at once) everything inside the selected area goes to black. When you would need to do this, I don’t know, but knowing how can’t hurt.