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Eraser Tool

                 Eraser Tool deletes the object on the selected layer and makes it look transparent, i.e., the background
                 layer’s object can be seen. You can change/toggle with the preferences in the Options bar for Eraser
                 Tool. Set your brush size and the mode that you want to use. You can choose from Brush, Pencil or
                 Block options. To change the transparency of the object, use the Opacity slider. Flow option helps you
                 to determine how quickly the eraser is applied.




                                                        Options bar of Eraser Tool
                      Background Eraser Tool

                 To remove a background or part of a background from an image in Photoshop, we use the Background
                 Eraser Tool. This tool is a combination of the Quick Selection Tool and the Eraser Tool. Background
                 eraser means erasing the background without erasing the main object. It is therefore very tricky and
                 requires more than just an eraser. It samples the colour at the centre of the brush and deletes pixels
                 of the similar colour when you drag the tool around your image.
                 Follow the given steps to use the Background Eraser Tool:

                 Step 1:  Select the Background Eraser Tool from the Tools panel.
                 Step 2:   In the Options bar, pick a brush size according to the image, set the Sampling to Continuous,
                         the Limits to Find Edges and the Tolerance to low. A low tolerance means that only areas that
                         are very similar to the sampled colour will be erased. A high tolerance erases a broader range
                         of colours.




                                                  Options bar for Background Eraser Tool
                 Step 3:   Bring the mouse pointer near the edge of the object from which you want to remove the
                         background. You will see a circle with small + sign (cross hair) in the centre.
                 Step 4:   Click and drag to start erasing. Do not drag the cross hair over the edges. As you click and
                         drag, you will see a checkerboard pattern appear in the areas you have erased. That is the
                         background of your canvas.
                 Step 5:   Once you have erased an area the whole way around the object, switch to the Eraser Tool.
                 Step 6:   Choose a large brush size and erase the rest of the background. Though this tool does not
                         erase with perfection around the edges, it is the quickest way to distinguish the background
                         and the main object.













                                                      Using Background Eraser Tool




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