This is the second tutorial on the selection tools, in the first tutorial you learned the basics of making your selections with your "basic" selection tools. I will now go over the many options that you can use when using these basic selection tools.

So, go ahead and selection any of the 4 basic selection tool type: square, circle or Single Column

When you select one of these tools you will notice that a set of options appear at the top of your screen

They look like this:

The first in the many options is the style option.

Go ahead and select "Constainted Aspect Ratio" style

What this style does is set your width and height to any ratio that you want. When you input a value, any square that you make will have the exact ration that you enter. For example if you input a ration of 1/1 your rectangle would obviously be a perfect square.

1/1 ration:

1/4 ratio:

Select the last style from the drop down menu called "fixed size"

What the fixed size option does is allow you to input the exact size that you want your rectangle to be. Input whatever value you want and simply click on your image, not need to drag with this option.

Example of a 64x64 square.:

And of course the Normal style allows you to make any kind of rectangular selection that you want.

The next option of the toolbar is "Feather"

Feather is a way to "blur" the edges of your selection. This option is usually used to blend images.

Input a feather of 5 px and make a selection

When you will in your selection you will see that the last 5 px of the perimeter of the rectangle have been blurred. The higher the feather value, the more of the square is blur.

This tecnique can also be used to select image and past them as a feathered selection: