Graphics Programs Reference
In-Depth Information
board and then
Select > Deselect
from the menu. You will now see the image in
Figure
87
. Everything is there except the sky.
When we use the
Magic Wand Tool
, there are two settings that will greatly affect its per-
formance. They are highlighted in yellow in the following image.
Tolerance
is the extent of variation in tone and hue for a color selection. The
Magic Wand
Tool
trys to select everything that is the same color as the spot where you clicked. The
smaller the tolerance the pickier it will be about the selection. I set the tolerance to 60 in
this case because I wanted to get anything that is blue. This is not always such a clear
choice and you will sometimes have to use a much tighter tolerance such as 10 or 15.
Contiguous
means that Photoshop will only look for the color selected until it finds an
edge. When it does, it will make the selection. If this had been checked in our example, we
would have to repeat the selection for every little patch of blue between the tree branches.
This would be extremely time-consuming. Since this option was not checked, Photoshop
selected every patch of blue in the entire image.