Maureen Neuringer | COMD 1162 - Section D030

09 Discussion

Each week you will need to respond to two questions posted. Your response should be a minimum of 150 words for both questions. You should also include at least one response to your fellow students. The responses are a requirement for participation part of your grade.

Question 01 –

Describe two different selection tools and how they work.

Question 02 –

How do you use the brush to paint over cut spots? How do you use the eraser to remove cut spots? What color does the brush paint with? What color does the eraser erase to?

2 Comments

  1. vielka romero

    Question 1 – Describe two different selection tools and how they work.

    Photoshop includes several selection tools, but two of the most commonly used are the Lasso Tool and the Quick Selection Tool. The Lasso Tool is a freehand selector that allows you to draw around an object manually. It works particularly well when the object has an irregular or organic shape. You simply click and drag your mouse around the part of the image you want to select. When you release the mouse, Photoshop closes the selection and creates an active outline. This tool gives you full control but requires a steady hand, so it helps most when precision and custom outlines are needed.

    The Quick Selection Tool works differently. Instead of drawing a full outline, you “paint” over the area you want to select. The tool automatically detects edges, textures, and color transitions. As you drag the brush, Photoshop expands the selection outward based on what it identifies as part of the same object. This tool is ideal for selecting objects quickly, especially when the edges are clear enough for Photoshop to identify them. It saves time and usually produces clean results with very little manual correction.

    Question 2 – How do you use the brush to paint over cut spots? How do you use the eraser to remove cut spots? What color does the brush paint with? What color does the eraser erase to?

    When cleaning up an image after making a cutout, the Brush Tool and Eraser Tool help fix leftover rough edges or missed areas. To use the Brush Tool, you simply select it, adjust the brush size and softness, then paint over any spots that need filling. The brush paints with whatever foreground color is currently selected in the color panel. If you want to restore missing parts of an object, you would choose an appropriate color that matches the area you are repairing. If you are painting on a mask, the brush behaves differently: painting with black hides parts of the layer, and painting with white reveals them again.

    The Eraser Tool works in a similar motion but produces a different outcome. When you use the Eraser Tool on a regular layer, it erases pixels and replaces them with transparency if the layer is unlocked. If the layer is locked as a background layer, the eraser removes pixels to the background color instead. When used on a layer mask, the eraser essentially acts like painting with black, which hides the selected area. Both tools help refine edges, correct small mistakes, and clean up rough cut spots so the final image looks polished and smooth.

  2. Christopher Martinez Lopez

    The Magnetic Lasso Tool and the Magic Wand Tool are two different selection tools that work in unique ways. The Magnetic Lasso Tool works by detecting and following edges in your image. As you drag your mouse along the edge of an object, it automatically snaps to the border by finding where colors change between the object and background. It places anchor points as you go, creating a selection path that follows the edge. You can adjust how sensitive it is and how far from your cursor it searches for edges. The Magic Wand Tool works by selecting pixels based on color similarity. When you click on a color in your image, it automatically selects all connecting pixels that match that color within a certain range. The tolerance setting controls how closely colors must match to be selected. Lower tolerance selects fewer similar colors, while higher tolerance selects more.

    To use the brush to paint over cut spots, you select the brush tool and paint over any areas that were accidentally left out of your selection. The brush paints with white, which adds those areas back into your selection. You can adjust the brush size to fit the area you need to fix, then simply paint over the spots that need to be included. To use the eraser to remove cut spots, you select the eraser tool and paint over areas that were incorrectly included in your selection. The eraser paints with black, which removes those areas from your selection. This lets you erase any background or unwanted parts that got selected by mistake. The brush paints with white to add to selections, and the eraser erases to black to subtract from selections.