For Tolerance, enter a value between 0 to 255. Enter a low value to select colors very similar to the pixel you click, or enter a higher value to select a broader range of colors.
To define a smooth selection edge, select Anti-aliased.
To select only adjacent areas using the same colors, select Contiguous. When this option is deselected, pixels using the same colors are selected throughout the entire photo.
To select colors using data from all the visible layers, select Use All Layers. When this option is deselected, the Magic Wand tool selects colors from only the active layer.