Basic Selection Tools
There are various Basic selection tools of adobe photoshop.
- Rectangular Marquee
The Rectangular marquee tool is the first tool in the toolbar and is used to select rectangular areas of an image.It's simple to use .Just select the tool and drag across the image to select area you want.By default the tool works in corner to corner mode.Dragging from top left or bottom right creates the marquee. - Circular marqueeThe circular marquee works in exactly the same way. except the selection will be elliptical.With both tools you can constrain.the selection so it is either a perfect circle or a perfect square by holdingdown the [Shift] key while still holding the mouse button down to switch back to unconstrained mode
The Circular Marquee works in exactly. - Option Bar
The option Bar displays tool specific setting.The selection tools have a set of four buttons that change the effect that subsequent selections have on the one's note that's currently active. The normal mode is new selection each time you click and drag a new selection is made and the current one is lost.Add mode makes the current selection larger and different shape. - Subtract mode
- In subtract mode you can remove areas from current selection.Here we changed to the circle marquee tools to subtract an elliptical shape from the rectangular selection we had made.You can continue to make negative selections that chip away at the current selection.This is a good way to refine a selection to fit a specific shape in image.
- Intersect
The forth mode is interact\.When in this mode , you can create a new selection that is the intersection between the currently active one and one you will drag out.
Basically all parts of the current selection will disappear except that portion that overlaps
new selection you drag out.Here is the original selection with new one being dragged out over it using intersect mode.